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Commit | Line | Data |
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2b97eabc RP |
1 | /* |
2 | * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management | |
3 | * | |
4 | * Copyright 2005 Wolfson Microelectronics PLC. | |
d331124d | 5 | * Author: Liam Girdwood <lrg@slimlogic.co.uk> |
2b97eabc RP |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
2b97eabc RP |
12 | * Features: |
13 | * o Changes power status of internal codec blocks depending on the | |
14 | * dynamic configuration of codec internal audio paths and active | |
74b8f955 | 15 | * DACs/ADCs. |
2b97eabc RP |
16 | * o Platform power domain - can support external components i.e. amps and |
17 | * mic/meadphone insertion events. | |
18 | * o Automatic Mic Bias support | |
19 | * o Jack insertion power event initiation - e.g. hp insertion will enable | |
20 | * sinks, dacs, etc | |
3a4fa0a2 | 21 | * o Delayed powerdown of audio susbsystem to reduce pops between a quick |
2b97eabc RP |
22 | * device reopen. |
23 | * | |
24 | * Todo: | |
25 | * o DAPM power change sequencing - allow for configurable per | |
26 | * codec sequences. | |
27 | * o Support for analogue bias optimisation. | |
28 | * o Support for reduced codec oversampling rates. | |
29 | * o Support for reduced codec bias currents. | |
30 | */ | |
31 | ||
32 | #include <linux/module.h> | |
33 | #include <linux/moduleparam.h> | |
34 | #include <linux/init.h> | |
9d0624a7 | 35 | #include <linux/async.h> |
2b97eabc RP |
36 | #include <linux/delay.h> |
37 | #include <linux/pm.h> | |
38 | #include <linux/bitops.h> | |
39 | #include <linux/platform_device.h> | |
40 | #include <linux/jiffies.h> | |
20496ff3 | 41 | #include <linux/debugfs.h> |
5a0e3ad6 | 42 | #include <linux/slab.h> |
2b97eabc RP |
43 | #include <sound/core.h> |
44 | #include <sound/pcm.h> | |
45 | #include <sound/pcm_params.h> | |
ce6120cc | 46 | #include <sound/soc.h> |
2b97eabc RP |
47 | #include <sound/initval.h> |
48 | ||
84e90930 MB |
49 | #include <trace/events/asoc.h> |
50 | ||
2b97eabc RP |
51 | /* dapm power sequences - make this per codec in the future */ |
52 | static int dapm_up_seq[] = { | |
38357ab2 MB |
53 | [snd_soc_dapm_pre] = 0, |
54 | [snd_soc_dapm_supply] = 1, | |
55 | [snd_soc_dapm_micbias] = 2, | |
010ff262 MB |
56 | [snd_soc_dapm_aif_in] = 3, |
57 | [snd_soc_dapm_aif_out] = 3, | |
58 | [snd_soc_dapm_mic] = 4, | |
59 | [snd_soc_dapm_mux] = 5, | |
24ff33ac | 60 | [snd_soc_dapm_virt_mux] = 5, |
010ff262 MB |
61 | [snd_soc_dapm_value_mux] = 5, |
62 | [snd_soc_dapm_dac] = 6, | |
63 | [snd_soc_dapm_mixer] = 7, | |
64 | [snd_soc_dapm_mixer_named_ctl] = 7, | |
65 | [snd_soc_dapm_pga] = 8, | |
66 | [snd_soc_dapm_adc] = 9, | |
d88429a6 | 67 | [snd_soc_dapm_out_drv] = 10, |
010ff262 MB |
68 | [snd_soc_dapm_hp] = 10, |
69 | [snd_soc_dapm_spk] = 10, | |
70 | [snd_soc_dapm_post] = 11, | |
2b97eabc | 71 | }; |
ca9c1aae | 72 | |
2b97eabc | 73 | static int dapm_down_seq[] = { |
38357ab2 MB |
74 | [snd_soc_dapm_pre] = 0, |
75 | [snd_soc_dapm_adc] = 1, | |
76 | [snd_soc_dapm_hp] = 2, | |
1ca04065 | 77 | [snd_soc_dapm_spk] = 2, |
d88429a6 | 78 | [snd_soc_dapm_out_drv] = 2, |
38357ab2 MB |
79 | [snd_soc_dapm_pga] = 4, |
80 | [snd_soc_dapm_mixer_named_ctl] = 5, | |
e3d4dabd MB |
81 | [snd_soc_dapm_mixer] = 5, |
82 | [snd_soc_dapm_dac] = 6, | |
83 | [snd_soc_dapm_mic] = 7, | |
84 | [snd_soc_dapm_micbias] = 8, | |
85 | [snd_soc_dapm_mux] = 9, | |
24ff33ac | 86 | [snd_soc_dapm_virt_mux] = 9, |
e3d4dabd | 87 | [snd_soc_dapm_value_mux] = 9, |
010ff262 MB |
88 | [snd_soc_dapm_aif_in] = 10, |
89 | [snd_soc_dapm_aif_out] = 10, | |
90 | [snd_soc_dapm_supply] = 11, | |
91 | [snd_soc_dapm_post] = 12, | |
2b97eabc RP |
92 | }; |
93 | ||
12ef193d | 94 | static void pop_wait(u32 pop_time) |
15e4c72f MB |
95 | { |
96 | if (pop_time) | |
97 | schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time)); | |
98 | } | |
99 | ||
fd8d3bc0 | 100 | static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...) |
15e4c72f MB |
101 | { |
102 | va_list args; | |
fd8d3bc0 | 103 | char *buf; |
15e4c72f | 104 | |
fd8d3bc0 JN |
105 | if (!pop_time) |
106 | return; | |
15e4c72f | 107 | |
fd8d3bc0 JN |
108 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); |
109 | if (buf == NULL) | |
110 | return; | |
15e4c72f | 111 | |
fd8d3bc0 JN |
112 | va_start(args, fmt); |
113 | vsnprintf(buf, PAGE_SIZE, fmt, args); | |
9d01df06 | 114 | dev_info(dev, "%s", buf); |
15e4c72f | 115 | va_end(args); |
fd8d3bc0 JN |
116 | |
117 | kfree(buf); | |
15e4c72f MB |
118 | } |
119 | ||
2b97eabc | 120 | /* create a new dapm widget */ |
88cb4290 | 121 | static inline struct snd_soc_dapm_widget *dapm_cnew_widget( |
2b97eabc RP |
122 | const struct snd_soc_dapm_widget *_widget) |
123 | { | |
88cb4290 | 124 | return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL); |
2b97eabc RP |
125 | } |
126 | ||
452c5eaa MB |
127 | /** |
128 | * snd_soc_dapm_set_bias_level - set the bias level for the system | |
ed5a4c47 | 129 | * @dapm: DAPM context |
452c5eaa MB |
130 | * @level: level to configure |
131 | * | |
132 | * Configure the bias (power) levels for the SoC audio device. | |
133 | * | |
134 | * Returns 0 for success else error. | |
135 | */ | |
ed5a4c47 | 136 | static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm, |
ce6120cc | 137 | enum snd_soc_bias_level level) |
452c5eaa | 138 | { |
ed5a4c47 | 139 | struct snd_soc_card *card = dapm->card; |
452c5eaa MB |
140 | int ret = 0; |
141 | ||
f83fba8b MB |
142 | switch (level) { |
143 | case SND_SOC_BIAS_ON: | |
ce6120cc | 144 | dev_dbg(dapm->dev, "Setting full bias\n"); |
f83fba8b MB |
145 | break; |
146 | case SND_SOC_BIAS_PREPARE: | |
ce6120cc | 147 | dev_dbg(dapm->dev, "Setting bias prepare\n"); |
f83fba8b MB |
148 | break; |
149 | case SND_SOC_BIAS_STANDBY: | |
ce6120cc | 150 | dev_dbg(dapm->dev, "Setting standby bias\n"); |
f83fba8b MB |
151 | break; |
152 | case SND_SOC_BIAS_OFF: | |
ce6120cc | 153 | dev_dbg(dapm->dev, "Setting bias off\n"); |
f83fba8b MB |
154 | break; |
155 | default: | |
ce6120cc | 156 | dev_err(dapm->dev, "Setting invalid bias %d\n", level); |
f83fba8b MB |
157 | return -EINVAL; |
158 | } | |
159 | ||
84e90930 MB |
160 | trace_snd_soc_bias_level_start(card, level); |
161 | ||
f0fba2ad | 162 | if (card && card->set_bias_level) |
452c5eaa | 163 | ret = card->set_bias_level(card, level); |
474e09ca | 164 | if (ret == 0) { |
ce6120cc LG |
165 | if (dapm->codec && dapm->codec->driver->set_bias_level) |
166 | ret = dapm->codec->driver->set_bias_level(dapm->codec, level); | |
474e09ca | 167 | else |
ce6120cc | 168 | dapm->bias_level = level; |
474e09ca | 169 | } |
1badabd9 MB |
170 | if (ret == 0) { |
171 | if (card && card->set_bias_level_post) | |
172 | ret = card->set_bias_level_post(card, level); | |
173 | } | |
452c5eaa | 174 | |
84e90930 MB |
175 | trace_snd_soc_bias_level_done(card, level); |
176 | ||
452c5eaa MB |
177 | return ret; |
178 | } | |
179 | ||
2b97eabc RP |
180 | /* set up initial codec paths */ |
181 | static void dapm_set_path_status(struct snd_soc_dapm_widget *w, | |
182 | struct snd_soc_dapm_path *p, int i) | |
183 | { | |
184 | switch (w->id) { | |
185 | case snd_soc_dapm_switch: | |
ca9c1aae IM |
186 | case snd_soc_dapm_mixer: |
187 | case snd_soc_dapm_mixer_named_ctl: { | |
2b97eabc | 188 | int val; |
4eaa9819 JS |
189 | struct soc_mixer_control *mc = (struct soc_mixer_control *) |
190 | w->kcontrols[i].private_value; | |
815ecf8d JS |
191 | unsigned int reg = mc->reg; |
192 | unsigned int shift = mc->shift; | |
4eaa9819 | 193 | int max = mc->max; |
815ecf8d JS |
194 | unsigned int mask = (1 << fls(max)) - 1; |
195 | unsigned int invert = mc->invert; | |
2b97eabc RP |
196 | |
197 | val = snd_soc_read(w->codec, reg); | |
198 | val = (val >> shift) & mask; | |
199 | ||
200 | if ((invert && !val) || (!invert && val)) | |
201 | p->connect = 1; | |
202 | else | |
203 | p->connect = 0; | |
204 | } | |
205 | break; | |
206 | case snd_soc_dapm_mux: { | |
207 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
208 | int val, item, bitmask; | |
209 | ||
f8ba0b7b | 210 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
211 | ; |
212 | val = snd_soc_read(w->codec, e->reg); | |
213 | item = (val >> e->shift_l) & (bitmask - 1); | |
214 | ||
215 | p->connect = 0; | |
f8ba0b7b | 216 | for (i = 0; i < e->max; i++) { |
2b97eabc RP |
217 | if (!(strcmp(p->name, e->texts[i])) && item == i) |
218 | p->connect = 1; | |
219 | } | |
220 | } | |
221 | break; | |
24ff33ac DP |
222 | case snd_soc_dapm_virt_mux: { |
223 | struct soc_enum *e = (struct soc_enum *)w->kcontrols[i].private_value; | |
224 | ||
225 | p->connect = 0; | |
226 | /* since a virtual mux has no backing registers to | |
227 | * decide which path to connect, it will try to match | |
228 | * with the first enumeration. This is to ensure | |
229 | * that the default mux choice (the first) will be | |
230 | * correctly powered up during initialization. | |
231 | */ | |
232 | if (!strcmp(p->name, e->texts[0])) | |
233 | p->connect = 1; | |
234 | } | |
235 | break; | |
2e72f8e3 | 236 | case snd_soc_dapm_value_mux: { |
74155556 | 237 | struct soc_enum *e = (struct soc_enum *) |
2e72f8e3 PU |
238 | w->kcontrols[i].private_value; |
239 | int val, item; | |
240 | ||
241 | val = snd_soc_read(w->codec, e->reg); | |
242 | val = (val >> e->shift_l) & e->mask; | |
243 | for (item = 0; item < e->max; item++) { | |
244 | if (val == e->values[item]) | |
245 | break; | |
246 | } | |
247 | ||
248 | p->connect = 0; | |
249 | for (i = 0; i < e->max; i++) { | |
250 | if (!(strcmp(p->name, e->texts[i])) && item == i) | |
251 | p->connect = 1; | |
252 | } | |
253 | } | |
254 | break; | |
2b97eabc RP |
255 | /* does not effect routing - always connected */ |
256 | case snd_soc_dapm_pga: | |
d88429a6 | 257 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
258 | case snd_soc_dapm_output: |
259 | case snd_soc_dapm_adc: | |
260 | case snd_soc_dapm_input: | |
261 | case snd_soc_dapm_dac: | |
262 | case snd_soc_dapm_micbias: | |
263 | case snd_soc_dapm_vmid: | |
246d0a17 | 264 | case snd_soc_dapm_supply: |
010ff262 MB |
265 | case snd_soc_dapm_aif_in: |
266 | case snd_soc_dapm_aif_out: | |
2b97eabc RP |
267 | p->connect = 1; |
268 | break; | |
269 | /* does effect routing - dynamically connected */ | |
270 | case snd_soc_dapm_hp: | |
271 | case snd_soc_dapm_mic: | |
272 | case snd_soc_dapm_spk: | |
273 | case snd_soc_dapm_line: | |
274 | case snd_soc_dapm_pre: | |
275 | case snd_soc_dapm_post: | |
276 | p->connect = 0; | |
277 | break; | |
278 | } | |
279 | } | |
280 | ||
74b8f955 | 281 | /* connect mux widget to its interconnecting audio paths */ |
ce6120cc | 282 | static int dapm_connect_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
283 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
284 | struct snd_soc_dapm_path *path, const char *control_name, | |
285 | const struct snd_kcontrol_new *kcontrol) | |
286 | { | |
287 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
288 | int i; | |
289 | ||
f8ba0b7b | 290 | for (i = 0; i < e->max; i++) { |
2b97eabc | 291 | if (!(strcmp(control_name, e->texts[i]))) { |
8ddab3f5 | 292 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
293 | list_add(&path->list_sink, &dest->sources); |
294 | list_add(&path->list_source, &src->sinks); | |
295 | path->name = (char*)e->texts[i]; | |
296 | dapm_set_path_status(dest, path, 0); | |
297 | return 0; | |
298 | } | |
299 | } | |
300 | ||
301 | return -ENODEV; | |
302 | } | |
303 | ||
74b8f955 | 304 | /* connect mixer widget to its interconnecting audio paths */ |
ce6120cc | 305 | static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
306 | struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest, |
307 | struct snd_soc_dapm_path *path, const char *control_name) | |
308 | { | |
309 | int i; | |
310 | ||
311 | /* search for mixer kcontrol */ | |
312 | for (i = 0; i < dest->num_kcontrols; i++) { | |
313 | if (!strcmp(control_name, dest->kcontrols[i].name)) { | |
8ddab3f5 | 314 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
315 | list_add(&path->list_sink, &dest->sources); |
316 | list_add(&path->list_source, &src->sinks); | |
317 | path->name = dest->kcontrols[i].name; | |
318 | dapm_set_path_status(dest, path, i); | |
319 | return 0; | |
320 | } | |
321 | } | |
322 | return -ENODEV; | |
323 | } | |
324 | ||
325 | /* update dapm codec register bits */ | |
326 | static int dapm_update_bits(struct snd_soc_dapm_widget *widget) | |
327 | { | |
328 | int change, power; | |
46f5822f | 329 | unsigned int old, new; |
2b97eabc | 330 | struct snd_soc_codec *codec = widget->codec; |
ce6120cc | 331 | struct snd_soc_dapm_context *dapm = widget->dapm; |
3a45b867 | 332 | struct snd_soc_card *card = dapm->card; |
2b97eabc RP |
333 | |
334 | /* check for valid widgets */ | |
335 | if (widget->reg < 0 || widget->id == snd_soc_dapm_input || | |
336 | widget->id == snd_soc_dapm_output || | |
337 | widget->id == snd_soc_dapm_hp || | |
338 | widget->id == snd_soc_dapm_mic || | |
339 | widget->id == snd_soc_dapm_line || | |
340 | widget->id == snd_soc_dapm_spk) | |
341 | return 0; | |
342 | ||
343 | power = widget->power; | |
344 | if (widget->invert) | |
345 | power = (power ? 0:1); | |
346 | ||
347 | old = snd_soc_read(codec, widget->reg); | |
348 | new = (old & ~(0x1 << widget->shift)) | (power << widget->shift); | |
349 | ||
350 | change = old != new; | |
351 | if (change) { | |
fd8d3bc0 JN |
352 | pop_dbg(dapm->dev, card->pop_time, |
353 | "pop test %s : %s in %d ms\n", | |
12ef193d | 354 | widget->name, widget->power ? "on" : "off", |
3a45b867 JN |
355 | card->pop_time); |
356 | pop_wait(card->pop_time); | |
69224719 | 357 | snd_soc_write(codec, widget->reg, new); |
2b97eabc | 358 | } |
f7d41ae8 JN |
359 | dev_dbg(dapm->dev, "reg %x old %x new %x change %d\n", widget->reg, |
360 | old, new, change); | |
2b97eabc RP |
361 | return change; |
362 | } | |
363 | ||
2b97eabc | 364 | /* create new dapm mixer control */ |
ce6120cc | 365 | static int dapm_new_mixer(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
366 | struct snd_soc_dapm_widget *w) |
367 | { | |
368 | int i, ret = 0; | |
219b93f5 | 369 | size_t name_len; |
2b97eabc | 370 | struct snd_soc_dapm_path *path; |
12ea2c78 | 371 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f MB |
372 | const char *prefix; |
373 | ||
374 | if (dapm->codec) | |
375 | prefix = dapm->codec->name_prefix; | |
376 | else | |
377 | prefix = NULL; | |
2b97eabc RP |
378 | |
379 | /* add kcontrol */ | |
380 | for (i = 0; i < w->num_kcontrols; i++) { | |
381 | ||
382 | /* match name */ | |
383 | list_for_each_entry(path, &w->sources, list_sink) { | |
384 | ||
385 | /* mixer/mux paths name must match control name */ | |
386 | if (path->name != (char*)w->kcontrols[i].name) | |
387 | continue; | |
388 | ||
ca9c1aae IM |
389 | /* add dapm control with long name. |
390 | * for dapm_mixer this is the concatenation of the | |
391 | * mixer and kcontrol name. | |
392 | * for dapm_mixer_named_ctl this is simply the | |
393 | * kcontrol name. | |
394 | */ | |
395 | name_len = strlen(w->kcontrols[i].name) + 1; | |
07495f3e | 396 | if (w->id != snd_soc_dapm_mixer_named_ctl) |
ca9c1aae IM |
397 | name_len += 1 + strlen(w->name); |
398 | ||
219b93f5 | 399 | path->long_name = kmalloc(name_len, GFP_KERNEL); |
ca9c1aae | 400 | |
2b97eabc RP |
401 | if (path->long_name == NULL) |
402 | return -ENOMEM; | |
403 | ||
ca9c1aae | 404 | switch (w->id) { |
ca9c1aae IM |
405 | default: |
406 | snprintf(path->long_name, name_len, "%s %s", | |
407 | w->name, w->kcontrols[i].name); | |
07495f3e | 408 | break; |
ca9c1aae IM |
409 | case snd_soc_dapm_mixer_named_ctl: |
410 | snprintf(path->long_name, name_len, "%s", | |
411 | w->kcontrols[i].name); | |
07495f3e | 412 | break; |
ca9c1aae IM |
413 | } |
414 | ||
219b93f5 MB |
415 | path->long_name[name_len - 1] = '\0'; |
416 | ||
2b97eabc | 417 | path->kcontrol = snd_soc_cnew(&w->kcontrols[i], w, |
efb7ac3f | 418 | path->long_name, prefix); |
ce6120cc | 419 | ret = snd_ctl_add(card, path->kcontrol); |
2b97eabc | 420 | if (ret < 0) { |
f7d41ae8 JN |
421 | dev_err(dapm->dev, |
422 | "asoc: failed to add dapm kcontrol %s: %d\n", | |
423 | path->long_name, ret); | |
2b97eabc RP |
424 | kfree(path->long_name); |
425 | path->long_name = NULL; | |
426 | return ret; | |
427 | } | |
428 | } | |
429 | } | |
430 | return ret; | |
431 | } | |
432 | ||
433 | /* create new dapm mux control */ | |
ce6120cc | 434 | static int dapm_new_mux(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
435 | struct snd_soc_dapm_widget *w) |
436 | { | |
437 | struct snd_soc_dapm_path *path = NULL; | |
438 | struct snd_kcontrol *kcontrol; | |
12ea2c78 | 439 | struct snd_card *card = dapm->card->snd_card; |
efb7ac3f | 440 | const char *prefix; |
2b97eabc RP |
441 | int ret = 0; |
442 | ||
443 | if (!w->num_kcontrols) { | |
f7d41ae8 | 444 | dev_err(dapm->dev, "asoc: mux %s has no controls\n", w->name); |
2b97eabc RP |
445 | return -EINVAL; |
446 | } | |
447 | ||
efb7ac3f MB |
448 | if (dapm->codec) |
449 | prefix = dapm->codec->name_prefix; | |
450 | else | |
451 | prefix = NULL; | |
452 | ||
453 | kcontrol = snd_soc_cnew(&w->kcontrols[0], w, w->name, prefix); | |
ce6120cc LG |
454 | ret = snd_ctl_add(card, kcontrol); |
455 | ||
2b97eabc RP |
456 | if (ret < 0) |
457 | goto err; | |
458 | ||
459 | list_for_each_entry(path, &w->sources, list_sink) | |
460 | path->kcontrol = kcontrol; | |
461 | ||
462 | return ret; | |
463 | ||
464 | err: | |
f7d41ae8 | 465 | dev_err(dapm->dev, "asoc: failed to add kcontrol %s\n", w->name); |
2b97eabc RP |
466 | return ret; |
467 | } | |
468 | ||
469 | /* create new dapm volume control */ | |
ce6120cc | 470 | static int dapm_new_pga(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
471 | struct snd_soc_dapm_widget *w) |
472 | { | |
a6c65736 | 473 | if (w->num_kcontrols) |
f7d41ae8 JN |
474 | dev_err(w->dapm->dev, |
475 | "asoc: PGA controls not supported: '%s'\n", w->name); | |
2b97eabc | 476 | |
a6c65736 | 477 | return 0; |
2b97eabc RP |
478 | } |
479 | ||
480 | /* reset 'walked' bit for each dapm path */ | |
ce6120cc | 481 | static inline void dapm_clear_walk(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
482 | { |
483 | struct snd_soc_dapm_path *p; | |
484 | ||
8ddab3f5 | 485 | list_for_each_entry(p, &dapm->card->paths, list) |
2b97eabc RP |
486 | p->walked = 0; |
487 | } | |
488 | ||
9949788b MB |
489 | /* We implement power down on suspend by checking the power state of |
490 | * the ALSA card - when we are suspending the ALSA state for the card | |
491 | * is set to D3. | |
492 | */ | |
493 | static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget) | |
494 | { | |
12ea2c78 | 495 | int level = snd_power_get_state(widget->dapm->card->snd_card); |
9949788b | 496 | |
f0fba2ad | 497 | switch (level) { |
9949788b MB |
498 | case SNDRV_CTL_POWER_D3hot: |
499 | case SNDRV_CTL_POWER_D3cold: | |
1547aba9 | 500 | if (widget->ignore_suspend) |
f7d41ae8 JN |
501 | dev_dbg(widget->dapm->dev, "%s ignoring suspend\n", |
502 | widget->name); | |
1547aba9 | 503 | return widget->ignore_suspend; |
9949788b MB |
504 | default: |
505 | return 1; | |
506 | } | |
507 | } | |
508 | ||
2b97eabc RP |
509 | /* |
510 | * Recursively check for a completed path to an active or physically connected | |
511 | * output widget. Returns number of complete paths. | |
512 | */ | |
513 | static int is_connected_output_ep(struct snd_soc_dapm_widget *widget) | |
514 | { | |
515 | struct snd_soc_dapm_path *path; | |
516 | int con = 0; | |
517 | ||
246d0a17 MB |
518 | if (widget->id == snd_soc_dapm_supply) |
519 | return 0; | |
520 | ||
010ff262 MB |
521 | switch (widget->id) { |
522 | case snd_soc_dapm_adc: | |
523 | case snd_soc_dapm_aif_out: | |
524 | if (widget->active) | |
9949788b | 525 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
526 | default: |
527 | break; | |
528 | } | |
2b97eabc RP |
529 | |
530 | if (widget->connected) { | |
531 | /* connected pin ? */ | |
532 | if (widget->id == snd_soc_dapm_output && !widget->ext) | |
9949788b | 533 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
534 | |
535 | /* connected jack or spk ? */ | |
536 | if (widget->id == snd_soc_dapm_hp || widget->id == snd_soc_dapm_spk || | |
eaeae5d9 | 537 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sources))) |
9949788b | 538 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
539 | } |
540 | ||
541 | list_for_each_entry(path, &widget->sinks, list_source) { | |
542 | if (path->walked) | |
543 | continue; | |
544 | ||
545 | if (path->sink && path->connect) { | |
546 | path->walked = 1; | |
547 | con += is_connected_output_ep(path->sink); | |
548 | } | |
549 | } | |
550 | ||
551 | return con; | |
552 | } | |
553 | ||
554 | /* | |
555 | * Recursively check for a completed path to an active or physically connected | |
556 | * input widget. Returns number of complete paths. | |
557 | */ | |
558 | static int is_connected_input_ep(struct snd_soc_dapm_widget *widget) | |
559 | { | |
560 | struct snd_soc_dapm_path *path; | |
561 | int con = 0; | |
562 | ||
246d0a17 MB |
563 | if (widget->id == snd_soc_dapm_supply) |
564 | return 0; | |
565 | ||
2b97eabc | 566 | /* active stream ? */ |
010ff262 MB |
567 | switch (widget->id) { |
568 | case snd_soc_dapm_dac: | |
569 | case snd_soc_dapm_aif_in: | |
570 | if (widget->active) | |
9949788b | 571 | return snd_soc_dapm_suspend_check(widget); |
010ff262 MB |
572 | default: |
573 | break; | |
574 | } | |
2b97eabc RP |
575 | |
576 | if (widget->connected) { | |
577 | /* connected pin ? */ | |
578 | if (widget->id == snd_soc_dapm_input && !widget->ext) | |
9949788b | 579 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
580 | |
581 | /* connected VMID/Bias for lower pops */ | |
582 | if (widget->id == snd_soc_dapm_vmid) | |
9949788b | 583 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
584 | |
585 | /* connected jack ? */ | |
eaeae5d9 PU |
586 | if (widget->id == snd_soc_dapm_mic || |
587 | (widget->id == snd_soc_dapm_line && !list_empty(&widget->sinks))) | |
9949788b | 588 | return snd_soc_dapm_suspend_check(widget); |
2b97eabc RP |
589 | } |
590 | ||
591 | list_for_each_entry(path, &widget->sources, list_sink) { | |
592 | if (path->walked) | |
593 | continue; | |
594 | ||
595 | if (path->source && path->connect) { | |
596 | path->walked = 1; | |
597 | con += is_connected_input_ep(path->source); | |
598 | } | |
599 | } | |
600 | ||
601 | return con; | |
602 | } | |
603 | ||
e2be2ccf JN |
604 | /* |
605 | * Handler for generic register modifier widget. | |
606 | */ | |
607 | int dapm_reg_event(struct snd_soc_dapm_widget *w, | |
608 | struct snd_kcontrol *kcontrol, int event) | |
609 | { | |
610 | unsigned int val; | |
611 | ||
612 | if (SND_SOC_DAPM_EVENT_ON(event)) | |
613 | val = w->on_val; | |
614 | else | |
615 | val = w->off_val; | |
616 | ||
617 | snd_soc_update_bits(w->codec, -(w->reg + 1), | |
618 | w->mask << w->shift, val << w->shift); | |
619 | ||
620 | return 0; | |
621 | } | |
11589418 | 622 | EXPORT_SYMBOL_GPL(dapm_reg_event); |
e2be2ccf | 623 | |
025756ec MB |
624 | /* Standard power change method, used to apply power changes to most |
625 | * widgets. | |
626 | */ | |
627 | static int dapm_generic_apply_power(struct snd_soc_dapm_widget *w) | |
628 | { | |
629 | int ret; | |
630 | ||
631 | /* call any power change event handlers */ | |
632 | if (w->event) | |
f7d41ae8 | 633 | dev_dbg(w->dapm->dev, "power %s event for %s flags %x\n", |
025756ec MB |
634 | w->power ? "on" : "off", |
635 | w->name, w->event_flags); | |
636 | ||
637 | /* power up pre event */ | |
638 | if (w->power && w->event && | |
639 | (w->event_flags & SND_SOC_DAPM_PRE_PMU)) { | |
640 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMU); | |
641 | if (ret < 0) | |
642 | return ret; | |
643 | } | |
644 | ||
645 | /* power down pre event */ | |
646 | if (!w->power && w->event && | |
647 | (w->event_flags & SND_SOC_DAPM_PRE_PMD)) { | |
648 | ret = w->event(w, NULL, SND_SOC_DAPM_PRE_PMD); | |
649 | if (ret < 0) | |
650 | return ret; | |
651 | } | |
652 | ||
025756ec MB |
653 | dapm_update_bits(w); |
654 | ||
025756ec MB |
655 | /* power up post event */ |
656 | if (w->power && w->event && | |
657 | (w->event_flags & SND_SOC_DAPM_POST_PMU)) { | |
658 | ret = w->event(w, | |
659 | NULL, SND_SOC_DAPM_POST_PMU); | |
660 | if (ret < 0) | |
661 | return ret; | |
662 | } | |
663 | ||
664 | /* power down post event */ | |
665 | if (!w->power && w->event && | |
666 | (w->event_flags & SND_SOC_DAPM_POST_PMD)) { | |
667 | ret = w->event(w, NULL, SND_SOC_DAPM_POST_PMD); | |
668 | if (ret < 0) | |
669 | return ret; | |
670 | } | |
671 | ||
672 | return 0; | |
673 | } | |
674 | ||
cd0f2d47 MB |
675 | /* Generic check to see if a widget should be powered. |
676 | */ | |
677 | static int dapm_generic_check_power(struct snd_soc_dapm_widget *w) | |
678 | { | |
679 | int in, out; | |
680 | ||
681 | in = is_connected_input_ep(w); | |
ce6120cc | 682 | dapm_clear_walk(w->dapm); |
cd0f2d47 | 683 | out = is_connected_output_ep(w); |
ce6120cc | 684 | dapm_clear_walk(w->dapm); |
cd0f2d47 MB |
685 | return out != 0 && in != 0; |
686 | } | |
687 | ||
6ea31b9f MB |
688 | /* Check to see if an ADC has power */ |
689 | static int dapm_adc_check_power(struct snd_soc_dapm_widget *w) | |
690 | { | |
691 | int in; | |
692 | ||
693 | if (w->active) { | |
694 | in = is_connected_input_ep(w); | |
ce6120cc | 695 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
696 | return in != 0; |
697 | } else { | |
698 | return dapm_generic_check_power(w); | |
699 | } | |
700 | } | |
701 | ||
702 | /* Check to see if a DAC has power */ | |
703 | static int dapm_dac_check_power(struct snd_soc_dapm_widget *w) | |
704 | { | |
705 | int out; | |
706 | ||
707 | if (w->active) { | |
708 | out = is_connected_output_ep(w); | |
ce6120cc | 709 | dapm_clear_walk(w->dapm); |
6ea31b9f MB |
710 | return out != 0; |
711 | } else { | |
712 | return dapm_generic_check_power(w); | |
713 | } | |
714 | } | |
715 | ||
246d0a17 MB |
716 | /* Check to see if a power supply is needed */ |
717 | static int dapm_supply_check_power(struct snd_soc_dapm_widget *w) | |
718 | { | |
719 | struct snd_soc_dapm_path *path; | |
720 | int power = 0; | |
721 | ||
722 | /* Check if one of our outputs is connected */ | |
723 | list_for_each_entry(path, &w->sinks, list_source) { | |
215edda3 MB |
724 | if (path->connected && |
725 | !path->connected(path->source, path->sink)) | |
726 | continue; | |
727 | ||
3017358a MB |
728 | if (!path->sink) |
729 | continue; | |
730 | ||
731 | if (path->sink->force) { | |
732 | power = 1; | |
733 | break; | |
734 | } | |
735 | ||
736 | if (path->sink->power_check && | |
246d0a17 MB |
737 | path->sink->power_check(path->sink)) { |
738 | power = 1; | |
739 | break; | |
740 | } | |
741 | } | |
742 | ||
ce6120cc | 743 | dapm_clear_walk(w->dapm); |
246d0a17 MB |
744 | |
745 | return power; | |
746 | } | |
747 | ||
38357ab2 MB |
748 | static int dapm_seq_compare(struct snd_soc_dapm_widget *a, |
749 | struct snd_soc_dapm_widget *b, | |
828a842f | 750 | bool power_up) |
42aa3418 | 751 | { |
828a842f MB |
752 | int *sort; |
753 | ||
754 | if (power_up) | |
755 | sort = dapm_up_seq; | |
756 | else | |
757 | sort = dapm_down_seq; | |
758 | ||
38357ab2 MB |
759 | if (sort[a->id] != sort[b->id]) |
760 | return sort[a->id] - sort[b->id]; | |
20e4859d MB |
761 | if (a->subseq != b->subseq) { |
762 | if (power_up) | |
763 | return a->subseq - b->subseq; | |
764 | else | |
765 | return b->subseq - a->subseq; | |
766 | } | |
b22ead2a MB |
767 | if (a->reg != b->reg) |
768 | return a->reg - b->reg; | |
84dab567 MB |
769 | if (a->dapm != b->dapm) |
770 | return (unsigned long)a->dapm - (unsigned long)b->dapm; | |
42aa3418 | 771 | |
38357ab2 MB |
772 | return 0; |
773 | } | |
42aa3418 | 774 | |
38357ab2 MB |
775 | /* Insert a widget in order into a DAPM power sequence. */ |
776 | static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget, | |
777 | struct list_head *list, | |
828a842f | 778 | bool power_up) |
38357ab2 MB |
779 | { |
780 | struct snd_soc_dapm_widget *w; | |
781 | ||
782 | list_for_each_entry(w, list, power_list) | |
828a842f | 783 | if (dapm_seq_compare(new_widget, w, power_up) < 0) { |
38357ab2 MB |
784 | list_add_tail(&new_widget->power_list, &w->power_list); |
785 | return; | |
786 | } | |
787 | ||
788 | list_add_tail(&new_widget->power_list, list); | |
789 | } | |
790 | ||
68f89ad8 MB |
791 | static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm, |
792 | struct snd_soc_dapm_widget *w, int event) | |
793 | { | |
794 | struct snd_soc_card *card = dapm->card; | |
795 | const char *ev_name; | |
796 | int power, ret; | |
797 | ||
798 | switch (event) { | |
799 | case SND_SOC_DAPM_PRE_PMU: | |
800 | ev_name = "PRE_PMU"; | |
801 | power = 1; | |
802 | break; | |
803 | case SND_SOC_DAPM_POST_PMU: | |
804 | ev_name = "POST_PMU"; | |
805 | power = 1; | |
806 | break; | |
807 | case SND_SOC_DAPM_PRE_PMD: | |
808 | ev_name = "PRE_PMD"; | |
809 | power = 0; | |
810 | break; | |
811 | case SND_SOC_DAPM_POST_PMD: | |
812 | ev_name = "POST_PMD"; | |
813 | power = 0; | |
814 | break; | |
815 | default: | |
816 | BUG(); | |
817 | return; | |
818 | } | |
819 | ||
820 | if (w->power != power) | |
821 | return; | |
822 | ||
823 | if (w->event && (w->event_flags & event)) { | |
824 | pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n", | |
825 | w->name, ev_name); | |
84e90930 | 826 | trace_snd_soc_dapm_widget_event_start(w, event); |
68f89ad8 | 827 | ret = w->event(w, NULL, event); |
84e90930 | 828 | trace_snd_soc_dapm_widget_event_done(w, event); |
68f89ad8 MB |
829 | if (ret < 0) |
830 | pr_err("%s: %s event failed: %d\n", | |
831 | ev_name, w->name, ret); | |
832 | } | |
833 | } | |
834 | ||
b22ead2a | 835 | /* Apply the coalesced changes from a DAPM sequence */ |
ce6120cc | 836 | static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm, |
b22ead2a | 837 | struct list_head *pending) |
163cac06 | 838 | { |
3a45b867 | 839 | struct snd_soc_card *card = dapm->card; |
68f89ad8 MB |
840 | struct snd_soc_dapm_widget *w; |
841 | int reg, power; | |
b22ead2a MB |
842 | unsigned int value = 0; |
843 | unsigned int mask = 0; | |
844 | unsigned int cur_mask; | |
845 | ||
846 | reg = list_first_entry(pending, struct snd_soc_dapm_widget, | |
847 | power_list)->reg; | |
848 | ||
849 | list_for_each_entry(w, pending, power_list) { | |
850 | cur_mask = 1 << w->shift; | |
851 | BUG_ON(reg != w->reg); | |
852 | ||
853 | if (w->invert) | |
854 | power = !w->power; | |
855 | else | |
856 | power = w->power; | |
857 | ||
858 | mask |= cur_mask; | |
859 | if (power) | |
860 | value |= cur_mask; | |
861 | ||
fd8d3bc0 | 862 | pop_dbg(dapm->dev, card->pop_time, |
b22ead2a MB |
863 | "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n", |
864 | w->name, reg, value, mask); | |
81628103 | 865 | |
68f89ad8 MB |
866 | /* Check for events */ |
867 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU); | |
868 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD); | |
81628103 MB |
869 | } |
870 | ||
871 | if (reg >= 0) { | |
fd8d3bc0 | 872 | pop_dbg(dapm->dev, card->pop_time, |
81628103 | 873 | "pop test : Applying 0x%x/0x%x to %x in %dms\n", |
3a45b867 JN |
874 | value, mask, reg, card->pop_time); |
875 | pop_wait(card->pop_time); | |
ce6120cc | 876 | snd_soc_update_bits(dapm->codec, reg, mask, value); |
b22ead2a MB |
877 | } |
878 | ||
81628103 | 879 | list_for_each_entry(w, pending, power_list) { |
68f89ad8 MB |
880 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU); |
881 | dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD); | |
81628103 | 882 | } |
b22ead2a | 883 | } |
42aa3418 | 884 | |
b22ead2a MB |
885 | /* Apply a DAPM power sequence. |
886 | * | |
887 | * We walk over a pre-sorted list of widgets to apply power to. In | |
888 | * order to minimise the number of writes to the device required | |
889 | * multiple widgets will be updated in a single write where possible. | |
890 | * Currently anything that requires more than a single write is not | |
891 | * handled. | |
892 | */ | |
ce6120cc | 893 | static void dapm_seq_run(struct snd_soc_dapm_context *dapm, |
828a842f | 894 | struct list_head *list, int event, bool power_up) |
b22ead2a MB |
895 | { |
896 | struct snd_soc_dapm_widget *w, *n; | |
897 | LIST_HEAD(pending); | |
898 | int cur_sort = -1; | |
20e4859d | 899 | int cur_subseq = -1; |
b22ead2a | 900 | int cur_reg = SND_SOC_NOPM; |
7be31be8 | 901 | struct snd_soc_dapm_context *cur_dapm = NULL; |
474b62d6 | 902 | int ret, i; |
828a842f MB |
903 | int *sort; |
904 | ||
905 | if (power_up) | |
906 | sort = dapm_up_seq; | |
907 | else | |
908 | sort = dapm_down_seq; | |
163cac06 | 909 | |
b22ead2a MB |
910 | list_for_each_entry_safe(w, n, list, power_list) { |
911 | ret = 0; | |
912 | ||
913 | /* Do we need to apply any queued changes? */ | |
7be31be8 | 914 | if (sort[w->id] != cur_sort || w->reg != cur_reg || |
20e4859d | 915 | w->dapm != cur_dapm || w->subseq != cur_subseq) { |
b22ead2a | 916 | if (!list_empty(&pending)) |
7be31be8 | 917 | dapm_seq_run_coalesced(cur_dapm, &pending); |
b22ead2a | 918 | |
474b62d6 MB |
919 | if (cur_dapm && cur_dapm->seq_notifier) { |
920 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
921 | if (sort[i] == cur_sort) | |
922 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d MB |
923 | i, |
924 | cur_subseq); | |
474b62d6 MB |
925 | } |
926 | ||
b22ead2a MB |
927 | INIT_LIST_HEAD(&pending); |
928 | cur_sort = -1; | |
20e4859d | 929 | cur_subseq = -1; |
b22ead2a | 930 | cur_reg = SND_SOC_NOPM; |
7be31be8 | 931 | cur_dapm = NULL; |
b22ead2a MB |
932 | } |
933 | ||
163cac06 MB |
934 | switch (w->id) { |
935 | case snd_soc_dapm_pre: | |
936 | if (!w->event) | |
b22ead2a MB |
937 | list_for_each_entry_safe_continue(w, n, list, |
938 | power_list); | |
163cac06 | 939 | |
b22ead2a | 940 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
941 | ret = w->event(w, |
942 | NULL, SND_SOC_DAPM_PRE_PMU); | |
b22ead2a | 943 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
944 | ret = w->event(w, |
945 | NULL, SND_SOC_DAPM_PRE_PMD); | |
163cac06 MB |
946 | break; |
947 | ||
948 | case snd_soc_dapm_post: | |
949 | if (!w->event) | |
b22ead2a MB |
950 | list_for_each_entry_safe_continue(w, n, list, |
951 | power_list); | |
163cac06 | 952 | |
b22ead2a | 953 | if (event == SND_SOC_DAPM_STREAM_START) |
163cac06 MB |
954 | ret = w->event(w, |
955 | NULL, SND_SOC_DAPM_POST_PMU); | |
b22ead2a | 956 | else if (event == SND_SOC_DAPM_STREAM_STOP) |
163cac06 MB |
957 | ret = w->event(w, |
958 | NULL, SND_SOC_DAPM_POST_PMD); | |
163cac06 MB |
959 | break; |
960 | ||
b22ead2a MB |
961 | case snd_soc_dapm_input: |
962 | case snd_soc_dapm_output: | |
963 | case snd_soc_dapm_hp: | |
964 | case snd_soc_dapm_mic: | |
965 | case snd_soc_dapm_line: | |
966 | case snd_soc_dapm_spk: | |
967 | /* No register support currently */ | |
163cac06 | 968 | ret = dapm_generic_apply_power(w); |
163cac06 | 969 | break; |
b22ead2a MB |
970 | |
971 | default: | |
81628103 MB |
972 | /* Queue it up for application */ |
973 | cur_sort = sort[w->id]; | |
20e4859d | 974 | cur_subseq = w->subseq; |
81628103 | 975 | cur_reg = w->reg; |
7be31be8 | 976 | cur_dapm = w->dapm; |
81628103 MB |
977 | list_move(&w->power_list, &pending); |
978 | break; | |
163cac06 | 979 | } |
b22ead2a MB |
980 | |
981 | if (ret < 0) | |
f7d41ae8 JN |
982 | dev_err(w->dapm->dev, |
983 | "Failed to apply widget power: %d\n", ret); | |
6ea31b9f | 984 | } |
b22ead2a MB |
985 | |
986 | if (!list_empty(&pending)) | |
ce6120cc | 987 | dapm_seq_run_coalesced(dapm, &pending); |
474b62d6 MB |
988 | |
989 | if (cur_dapm && cur_dapm->seq_notifier) { | |
990 | for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++) | |
991 | if (sort[i] == cur_sort) | |
992 | cur_dapm->seq_notifier(cur_dapm, | |
f85a9e0d | 993 | i, cur_subseq); |
474b62d6 | 994 | } |
42aa3418 MB |
995 | } |
996 | ||
97404f2e MB |
997 | static void dapm_widget_update(struct snd_soc_dapm_context *dapm) |
998 | { | |
999 | struct snd_soc_dapm_update *update = dapm->update; | |
1000 | struct snd_soc_dapm_widget *w; | |
1001 | int ret; | |
1002 | ||
1003 | if (!update) | |
1004 | return; | |
1005 | ||
1006 | w = update->widget; | |
1007 | ||
1008 | if (w->event && | |
1009 | (w->event_flags & SND_SOC_DAPM_PRE_REG)) { | |
1010 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG); | |
1011 | if (ret != 0) | |
1012 | pr_err("%s DAPM pre-event failed: %d\n", | |
1013 | w->name, ret); | |
1014 | } | |
1015 | ||
1016 | ret = snd_soc_update_bits(w->codec, update->reg, update->mask, | |
1017 | update->val); | |
1018 | if (ret < 0) | |
1019 | pr_err("%s DAPM update failed: %d\n", w->name, ret); | |
1020 | ||
1021 | if (w->event && | |
1022 | (w->event_flags & SND_SOC_DAPM_POST_REG)) { | |
1023 | ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG); | |
1024 | if (ret != 0) | |
1025 | pr_err("%s DAPM post-event failed: %d\n", | |
1026 | w->name, ret); | |
1027 | } | |
1028 | } | |
1029 | ||
9d0624a7 MB |
1030 | /* Async callback run prior to DAPM sequences - brings to _PREPARE if |
1031 | * they're changing state. | |
1032 | */ | |
1033 | static void dapm_pre_sequence_async(void *data, async_cookie_t cookie) | |
1034 | { | |
1035 | struct snd_soc_dapm_context *d = data; | |
1036 | int ret; | |
1037 | ||
1038 | if (d->dev_power && d->bias_level == SND_SOC_BIAS_OFF) { | |
1039 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1040 | if (ret != 0) | |
1041 | dev_err(d->dev, | |
1042 | "Failed to turn on bias: %d\n", ret); | |
1043 | } | |
1044 | ||
1045 | /* If we're changing to all on or all off then prepare */ | |
1046 | if ((d->dev_power && d->bias_level == SND_SOC_BIAS_STANDBY) || | |
1047 | (!d->dev_power && d->bias_level == SND_SOC_BIAS_ON)) { | |
1048 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE); | |
1049 | if (ret != 0) | |
1050 | dev_err(d->dev, | |
1051 | "Failed to prepare bias: %d\n", ret); | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | /* Async callback run prior to DAPM sequences - brings to their final | |
1056 | * state. | |
1057 | */ | |
1058 | static void dapm_post_sequence_async(void *data, async_cookie_t cookie) | |
1059 | { | |
1060 | struct snd_soc_dapm_context *d = data; | |
1061 | int ret; | |
1062 | ||
1063 | /* If we just powered the last thing off drop to standby bias */ | |
1064 | if (d->bias_level == SND_SOC_BIAS_PREPARE && !d->dev_power) { | |
1065 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY); | |
1066 | if (ret != 0) | |
1067 | dev_err(d->dev, "Failed to apply standby bias: %d\n", | |
1068 | ret); | |
1069 | } | |
97404f2e | 1070 | |
9d0624a7 MB |
1071 | /* If we're in standby and can support bias off then do that */ |
1072 | if (d->bias_level == SND_SOC_BIAS_STANDBY && d->idle_bias_off) { | |
1073 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF); | |
1074 | if (ret != 0) | |
1075 | dev_err(d->dev, "Failed to turn off bias: %d\n", ret); | |
1076 | } | |
1077 | ||
1078 | /* If we just powered up then move to active bias */ | |
1079 | if (d->bias_level == SND_SOC_BIAS_PREPARE && d->dev_power) { | |
1080 | ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON); | |
1081 | if (ret != 0) | |
1082 | dev_err(d->dev, "Failed to apply active bias: %d\n", | |
1083 | ret); | |
1084 | } | |
1085 | } | |
97404f2e | 1086 | |
2b97eabc RP |
1087 | /* |
1088 | * Scan each dapm widget for complete audio path. | |
1089 | * A complete path is a route that has valid endpoints i.e.:- | |
1090 | * | |
1091 | * o DAC to output pin. | |
1092 | * o Input Pin to ADC. | |
1093 | * o Input pin to Output pin (bypass, sidetone) | |
1094 | * o DAC to ADC (loopback). | |
1095 | */ | |
ce6120cc | 1096 | static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event) |
2b97eabc | 1097 | { |
12ea2c78 | 1098 | struct snd_soc_card *card = dapm->card; |
2b97eabc | 1099 | struct snd_soc_dapm_widget *w; |
7be31be8 | 1100 | struct snd_soc_dapm_context *d; |
291f3bbc MB |
1101 | LIST_HEAD(up_list); |
1102 | LIST_HEAD(down_list); | |
9d0624a7 | 1103 | LIST_HEAD(async_domain); |
38357ab2 | 1104 | int power; |
6d3ddc81 | 1105 | |
84e90930 MB |
1106 | trace_snd_soc_dapm_start(card); |
1107 | ||
7be31be8 JN |
1108 | list_for_each_entry(d, &card->dapm_list, list) |
1109 | if (d->n_widgets) | |
1110 | d->dev_power = 0; | |
1111 | ||
6d3ddc81 MB |
1112 | /* Check which widgets we need to power and store them in |
1113 | * lists indicating if they should be powered up or down. | |
1114 | */ | |
97c866de | 1115 | list_for_each_entry(w, &card->widgets, list) { |
6d3ddc81 MB |
1116 | switch (w->id) { |
1117 | case snd_soc_dapm_pre: | |
828a842f | 1118 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1119 | break; |
1120 | case snd_soc_dapm_post: | |
828a842f | 1121 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 MB |
1122 | break; |
1123 | ||
1124 | default: | |
1125 | if (!w->power_check) | |
1126 | continue; | |
1127 | ||
9949788b | 1128 | if (!w->force) |
50b6bce5 | 1129 | power = w->power_check(w); |
9949788b MB |
1130 | else |
1131 | power = 1; | |
1132 | if (power) | |
7be31be8 | 1133 | w->dapm->dev_power = 1; |
452c5eaa | 1134 | |
6d3ddc81 MB |
1135 | if (w->power == power) |
1136 | continue; | |
1137 | ||
84e90930 MB |
1138 | trace_snd_soc_dapm_widget_power(w, power); |
1139 | ||
6d3ddc81 | 1140 | if (power) |
828a842f | 1141 | dapm_seq_insert(w, &up_list, true); |
6d3ddc81 | 1142 | else |
828a842f | 1143 | dapm_seq_insert(w, &down_list, false); |
6d3ddc81 MB |
1144 | |
1145 | w->power = power; | |
1146 | break; | |
1147 | } | |
2b97eabc RP |
1148 | } |
1149 | ||
b14b76a5 MB |
1150 | /* If there are no DAPM widgets then try to figure out power from the |
1151 | * event type. | |
1152 | */ | |
97c866de | 1153 | if (!dapm->n_widgets) { |
b14b76a5 MB |
1154 | switch (event) { |
1155 | case SND_SOC_DAPM_STREAM_START: | |
1156 | case SND_SOC_DAPM_STREAM_RESUME: | |
7be31be8 | 1157 | dapm->dev_power = 1; |
b14b76a5 | 1158 | break; |
862af8ad | 1159 | case SND_SOC_DAPM_STREAM_STOP: |
7be31be8 | 1160 | dapm->dev_power = !!dapm->codec->active; |
862af8ad | 1161 | break; |
50b6bce5 | 1162 | case SND_SOC_DAPM_STREAM_SUSPEND: |
7be31be8 | 1163 | dapm->dev_power = 0; |
50b6bce5 | 1164 | break; |
b14b76a5 | 1165 | case SND_SOC_DAPM_STREAM_NOP: |
ce6120cc | 1166 | switch (dapm->bias_level) { |
a96ca338 MB |
1167 | case SND_SOC_BIAS_STANDBY: |
1168 | case SND_SOC_BIAS_OFF: | |
7be31be8 | 1169 | dapm->dev_power = 0; |
a96ca338 MB |
1170 | break; |
1171 | default: | |
7be31be8 | 1172 | dapm->dev_power = 1; |
a96ca338 MB |
1173 | break; |
1174 | } | |
50b6bce5 | 1175 | break; |
b14b76a5 MB |
1176 | default: |
1177 | break; | |
1178 | } | |
1179 | } | |
1180 | ||
9d0624a7 MB |
1181 | /* Run all the bias changes in parallel */ |
1182 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1183 | async_schedule_domain(dapm_pre_sequence_async, d, | |
1184 | &async_domain); | |
1185 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1186 | |
6d3ddc81 | 1187 | /* Power down widgets first; try to avoid amplifying pops. */ |
828a842f | 1188 | dapm_seq_run(dapm, &down_list, event, false); |
2b97eabc | 1189 | |
97404f2e MB |
1190 | dapm_widget_update(dapm); |
1191 | ||
6d3ddc81 | 1192 | /* Now power up. */ |
828a842f | 1193 | dapm_seq_run(dapm, &up_list, event, true); |
2b97eabc | 1194 | |
9d0624a7 MB |
1195 | /* Run all the bias changes in parallel */ |
1196 | list_for_each_entry(d, &dapm->card->dapm_list, list) | |
1197 | async_schedule_domain(dapm_post_sequence_async, d, | |
1198 | &async_domain); | |
1199 | async_synchronize_full_domain(&async_domain); | |
452c5eaa | 1200 | |
fd8d3bc0 JN |
1201 | pop_dbg(dapm->dev, card->pop_time, |
1202 | "DAPM sequencing finished, waiting %dms\n", card->pop_time); | |
3a45b867 | 1203 | pop_wait(card->pop_time); |
cb507e7e | 1204 | |
84e90930 MB |
1205 | trace_snd_soc_dapm_done(card); |
1206 | ||
42aa3418 | 1207 | return 0; |
2b97eabc RP |
1208 | } |
1209 | ||
79fb9387 MB |
1210 | #ifdef CONFIG_DEBUG_FS |
1211 | static int dapm_widget_power_open_file(struct inode *inode, struct file *file) | |
1212 | { | |
1213 | file->private_data = inode->i_private; | |
1214 | return 0; | |
1215 | } | |
1216 | ||
1217 | static ssize_t dapm_widget_power_read_file(struct file *file, | |
1218 | char __user *user_buf, | |
1219 | size_t count, loff_t *ppos) | |
1220 | { | |
1221 | struct snd_soc_dapm_widget *w = file->private_data; | |
1222 | char *buf; | |
1223 | int in, out; | |
1224 | ssize_t ret; | |
1225 | struct snd_soc_dapm_path *p = NULL; | |
1226 | ||
1227 | buf = kmalloc(PAGE_SIZE, GFP_KERNEL); | |
1228 | if (!buf) | |
1229 | return -ENOMEM; | |
1230 | ||
1231 | in = is_connected_input_ep(w); | |
ce6120cc | 1232 | dapm_clear_walk(w->dapm); |
79fb9387 | 1233 | out = is_connected_output_ep(w); |
ce6120cc | 1234 | dapm_clear_walk(w->dapm); |
79fb9387 | 1235 | |
d033c36a | 1236 | ret = snprintf(buf, PAGE_SIZE, "%s: %s in %d out %d", |
79fb9387 MB |
1237 | w->name, w->power ? "On" : "Off", in, out); |
1238 | ||
d033c36a MB |
1239 | if (w->reg >= 0) |
1240 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
1241 | " - R%d(0x%x) bit %d", | |
1242 | w->reg, w->reg, w->shift); | |
1243 | ||
1244 | ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n"); | |
1245 | ||
3eef08ba MB |
1246 | if (w->sname) |
1247 | ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n", | |
1248 | w->sname, | |
1249 | w->active ? "active" : "inactive"); | |
79fb9387 MB |
1250 | |
1251 | list_for_each_entry(p, &w->sources, list_sink) { | |
215edda3 MB |
1252 | if (p->connected && !p->connected(w, p->sink)) |
1253 | continue; | |
1254 | ||
79fb9387 MB |
1255 | if (p->connect) |
1256 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1257 | " in \"%s\" \"%s\"\n", |
79fb9387 MB |
1258 | p->name ? p->name : "static", |
1259 | p->source->name); | |
1260 | } | |
1261 | list_for_each_entry(p, &w->sinks, list_source) { | |
215edda3 MB |
1262 | if (p->connected && !p->connected(w, p->sink)) |
1263 | continue; | |
1264 | ||
79fb9387 MB |
1265 | if (p->connect) |
1266 | ret += snprintf(buf + ret, PAGE_SIZE - ret, | |
67f5ed6e | 1267 | " out \"%s\" \"%s\"\n", |
79fb9387 MB |
1268 | p->name ? p->name : "static", |
1269 | p->sink->name); | |
1270 | } | |
1271 | ||
1272 | ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret); | |
1273 | ||
1274 | kfree(buf); | |
1275 | return ret; | |
1276 | } | |
1277 | ||
1278 | static const struct file_operations dapm_widget_power_fops = { | |
1279 | .open = dapm_widget_power_open_file, | |
1280 | .read = dapm_widget_power_read_file, | |
6038f373 | 1281 | .llseek = default_llseek, |
79fb9387 MB |
1282 | }; |
1283 | ||
ce6120cc | 1284 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1285 | { |
1286 | struct snd_soc_dapm_widget *w; | |
1287 | struct dentry *d; | |
1288 | ||
ce6120cc | 1289 | if (!dapm->debugfs_dapm) |
79fb9387 MB |
1290 | return; |
1291 | ||
97c866de JN |
1292 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1293 | if (!w->name || w->dapm != dapm) | |
79fb9387 MB |
1294 | continue; |
1295 | ||
1296 | d = debugfs_create_file(w->name, 0444, | |
ce6120cc | 1297 | dapm->debugfs_dapm, w, |
79fb9387 MB |
1298 | &dapm_widget_power_fops); |
1299 | if (!d) | |
f7d41ae8 JN |
1300 | dev_warn(w->dapm->dev, |
1301 | "ASoC: Failed to create %s debugfs file\n", | |
1302 | w->name); | |
79fb9387 MB |
1303 | } |
1304 | } | |
1305 | #else | |
ce6120cc | 1306 | void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm) |
79fb9387 MB |
1307 | { |
1308 | } | |
1309 | #endif | |
1310 | ||
2b97eabc | 1311 | /* test and update the power status of a mux widget */ |
d9c96cf3 | 1312 | static int dapm_mux_update_power(struct snd_soc_dapm_widget *widget, |
3a65577d MB |
1313 | struct snd_kcontrol *kcontrol, int change, |
1314 | int mux, struct soc_enum *e) | |
2b97eabc RP |
1315 | { |
1316 | struct snd_soc_dapm_path *path; | |
1317 | int found = 0; | |
1318 | ||
eff317d0 | 1319 | if (widget->id != snd_soc_dapm_mux && |
24ff33ac | 1320 | widget->id != snd_soc_dapm_virt_mux && |
eff317d0 | 1321 | widget->id != snd_soc_dapm_value_mux) |
2b97eabc RP |
1322 | return -ENODEV; |
1323 | ||
3a65577d | 1324 | if (!change) |
2b97eabc RP |
1325 | return 0; |
1326 | ||
1327 | /* find dapm widget path assoc with kcontrol */ | |
8ddab3f5 | 1328 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1329 | if (path->kcontrol != kcontrol) |
1330 | continue; | |
1331 | ||
cb01e2b9 | 1332 | if (!path->name || !e->texts[mux]) |
2b97eabc RP |
1333 | continue; |
1334 | ||
1335 | found = 1; | |
1336 | /* we now need to match the string in the enum to the path */ | |
cb01e2b9 | 1337 | if (!(strcmp(path->name, e->texts[mux]))) |
2b97eabc RP |
1338 | path->connect = 1; /* new connection */ |
1339 | else | |
1340 | path->connect = 0; /* old connection must be powered down */ | |
1341 | } | |
1342 | ||
b91b8fa0 | 1343 | if (found) |
ce6120cc | 1344 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1345 | |
1346 | return 0; | |
1347 | } | |
2b97eabc | 1348 | |
1b075e3f | 1349 | /* test and update the power status of a mixer or switch widget */ |
d9c96cf3 | 1350 | static int dapm_mixer_update_power(struct snd_soc_dapm_widget *widget, |
283375ce | 1351 | struct snd_kcontrol *kcontrol, int connect) |
2b97eabc RP |
1352 | { |
1353 | struct snd_soc_dapm_path *path; | |
1354 | int found = 0; | |
1355 | ||
1b075e3f | 1356 | if (widget->id != snd_soc_dapm_mixer && |
ca9c1aae | 1357 | widget->id != snd_soc_dapm_mixer_named_ctl && |
1b075e3f | 1358 | widget->id != snd_soc_dapm_switch) |
2b97eabc RP |
1359 | return -ENODEV; |
1360 | ||
2b97eabc | 1361 | /* find dapm widget path assoc with kcontrol */ |
8ddab3f5 | 1362 | list_for_each_entry(path, &widget->dapm->card->paths, list) { |
2b97eabc RP |
1363 | if (path->kcontrol != kcontrol) |
1364 | continue; | |
1365 | ||
1366 | /* found, now check type */ | |
1367 | found = 1; | |
283375ce | 1368 | path->connect = connect; |
2b97eabc RP |
1369 | break; |
1370 | } | |
1371 | ||
b91b8fa0 | 1372 | if (found) |
ce6120cc | 1373 | dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1374 | |
1375 | return 0; | |
1376 | } | |
2b97eabc RP |
1377 | |
1378 | /* show dapm widget status in sys fs */ | |
1379 | static ssize_t dapm_widget_show(struct device *dev, | |
1380 | struct device_attribute *attr, char *buf) | |
1381 | { | |
f0fba2ad LG |
1382 | struct snd_soc_pcm_runtime *rtd = |
1383 | container_of(dev, struct snd_soc_pcm_runtime, dev); | |
1384 | struct snd_soc_codec *codec =rtd->codec; | |
2b97eabc RP |
1385 | struct snd_soc_dapm_widget *w; |
1386 | int count = 0; | |
1387 | char *state = "not set"; | |
1388 | ||
97c866de JN |
1389 | list_for_each_entry(w, &codec->card->widgets, list) { |
1390 | if (w->dapm != &codec->dapm) | |
1391 | continue; | |
2b97eabc RP |
1392 | |
1393 | /* only display widgets that burnm power */ | |
1394 | switch (w->id) { | |
1395 | case snd_soc_dapm_hp: | |
1396 | case snd_soc_dapm_mic: | |
1397 | case snd_soc_dapm_spk: | |
1398 | case snd_soc_dapm_line: | |
1399 | case snd_soc_dapm_micbias: | |
1400 | case snd_soc_dapm_dac: | |
1401 | case snd_soc_dapm_adc: | |
1402 | case snd_soc_dapm_pga: | |
d88429a6 | 1403 | case snd_soc_dapm_out_drv: |
2b97eabc | 1404 | case snd_soc_dapm_mixer: |
ca9c1aae | 1405 | case snd_soc_dapm_mixer_named_ctl: |
246d0a17 | 1406 | case snd_soc_dapm_supply: |
2b97eabc RP |
1407 | if (w->name) |
1408 | count += sprintf(buf + count, "%s: %s\n", | |
1409 | w->name, w->power ? "On":"Off"); | |
1410 | break; | |
1411 | default: | |
1412 | break; | |
1413 | } | |
1414 | } | |
1415 | ||
ce6120cc | 1416 | switch (codec->dapm.bias_level) { |
0be9898a MB |
1417 | case SND_SOC_BIAS_ON: |
1418 | state = "On"; | |
2b97eabc | 1419 | break; |
0be9898a MB |
1420 | case SND_SOC_BIAS_PREPARE: |
1421 | state = "Prepare"; | |
2b97eabc | 1422 | break; |
0be9898a MB |
1423 | case SND_SOC_BIAS_STANDBY: |
1424 | state = "Standby"; | |
2b97eabc | 1425 | break; |
0be9898a MB |
1426 | case SND_SOC_BIAS_OFF: |
1427 | state = "Off"; | |
2b97eabc RP |
1428 | break; |
1429 | } | |
1430 | count += sprintf(buf + count, "PM State: %s\n", state); | |
1431 | ||
1432 | return count; | |
1433 | } | |
1434 | ||
1435 | static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL); | |
1436 | ||
1437 | int snd_soc_dapm_sys_add(struct device *dev) | |
1438 | { | |
12ef193d | 1439 | return device_create_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1440 | } |
1441 | ||
1442 | static void snd_soc_dapm_sys_remove(struct device *dev) | |
1443 | { | |
aef90843 | 1444 | device_remove_file(dev, &dev_attr_dapm_widget); |
2b97eabc RP |
1445 | } |
1446 | ||
1447 | /* free all dapm widgets and resources */ | |
ce6120cc | 1448 | static void dapm_free_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1449 | { |
1450 | struct snd_soc_dapm_widget *w, *next_w; | |
1451 | struct snd_soc_dapm_path *p, *next_p; | |
1452 | ||
97c866de JN |
1453 | list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) { |
1454 | if (w->dapm != dapm) | |
1455 | continue; | |
2b97eabc | 1456 | list_del(&w->list); |
8ddab3f5 JN |
1457 | /* |
1458 | * remove source and sink paths associated to this widget. | |
1459 | * While removing the path, remove reference to it from both | |
1460 | * source and sink widgets so that path is removed only once. | |
1461 | */ | |
1462 | list_for_each_entry_safe(p, next_p, &w->sources, list_sink) { | |
1463 | list_del(&p->list_sink); | |
1464 | list_del(&p->list_source); | |
1465 | list_del(&p->list); | |
1466 | kfree(p->long_name); | |
1467 | kfree(p); | |
1468 | } | |
1469 | list_for_each_entry_safe(p, next_p, &w->sinks, list_source) { | |
1470 | list_del(&p->list_sink); | |
1471 | list_del(&p->list_source); | |
1472 | list_del(&p->list); | |
1473 | kfree(p->long_name); | |
1474 | kfree(p); | |
1475 | } | |
ead9b919 | 1476 | kfree(w->name); |
2b97eabc RP |
1477 | kfree(w); |
1478 | } | |
2b97eabc RP |
1479 | } |
1480 | ||
ce6120cc | 1481 | static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm, |
1649923d | 1482 | const char *pin, int status) |
a5302181 LG |
1483 | { |
1484 | struct snd_soc_dapm_widget *w; | |
1485 | ||
97c866de JN |
1486 | list_for_each_entry(w, &dapm->card->widgets, list) { |
1487 | if (w->dapm != dapm) | |
1488 | continue; | |
a5302181 | 1489 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
1490 | dev_dbg(w->dapm->dev, "dapm: pin %s = %d\n", |
1491 | pin, status); | |
a5302181 | 1492 | w->connected = status; |
5b9e87cc MB |
1493 | /* Allow disabling of forced pins */ |
1494 | if (status == 0) | |
1495 | w->force = 0; | |
a5302181 LG |
1496 | return 0; |
1497 | } | |
1498 | } | |
1499 | ||
f7d41ae8 | 1500 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
a5302181 LG |
1501 | return -EINVAL; |
1502 | } | |
1503 | ||
2b97eabc | 1504 | /** |
a5302181 | 1505 | * snd_soc_dapm_sync - scan and power dapm paths |
ce6120cc | 1506 | * @dapm: DAPM context |
2b97eabc RP |
1507 | * |
1508 | * Walks all dapm audio paths and powers widgets according to their | |
1509 | * stream or path usage. | |
1510 | * | |
1511 | * Returns 0 for success. | |
1512 | */ | |
ce6120cc | 1513 | int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm) |
2b97eabc | 1514 | { |
ce6120cc | 1515 | return dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc | 1516 | } |
a5302181 | 1517 | EXPORT_SYMBOL_GPL(snd_soc_dapm_sync); |
2b97eabc | 1518 | |
ce6120cc | 1519 | static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm, |
215edda3 | 1520 | const struct snd_soc_dapm_route *route) |
2b97eabc RP |
1521 | { |
1522 | struct snd_soc_dapm_path *path; | |
1523 | struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w; | |
97c866de | 1524 | struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL; |
ead9b919 | 1525 | const char *sink; |
215edda3 | 1526 | const char *control = route->control; |
ead9b919 JN |
1527 | const char *source; |
1528 | char prefixed_sink[80]; | |
1529 | char prefixed_source[80]; | |
2b97eabc RP |
1530 | int ret = 0; |
1531 | ||
88e8b9a8 | 1532 | if (dapm->codec && dapm->codec->name_prefix) { |
ead9b919 JN |
1533 | snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s", |
1534 | dapm->codec->name_prefix, route->sink); | |
1535 | sink = prefixed_sink; | |
1536 | snprintf(prefixed_source, sizeof(prefixed_source), "%s %s", | |
1537 | dapm->codec->name_prefix, route->source); | |
1538 | source = prefixed_source; | |
1539 | } else { | |
1540 | sink = route->sink; | |
1541 | source = route->source; | |
1542 | } | |
1543 | ||
97c866de JN |
1544 | /* |
1545 | * find src and dest widgets over all widgets but favor a widget from | |
1546 | * current DAPM context | |
1547 | */ | |
1548 | list_for_each_entry(w, &dapm->card->widgets, list) { | |
2b97eabc | 1549 | if (!wsink && !(strcmp(w->name, sink))) { |
97c866de JN |
1550 | wtsink = w; |
1551 | if (w->dapm == dapm) | |
1552 | wsink = w; | |
2b97eabc RP |
1553 | continue; |
1554 | } | |
1555 | if (!wsource && !(strcmp(w->name, source))) { | |
97c866de JN |
1556 | wtsource = w; |
1557 | if (w->dapm == dapm) | |
1558 | wsource = w; | |
2b97eabc RP |
1559 | } |
1560 | } | |
97c866de JN |
1561 | /* use widget from another DAPM context if not found from this */ |
1562 | if (!wsink) | |
1563 | wsink = wtsink; | |
1564 | if (!wsource) | |
1565 | wsource = wtsource; | |
2b97eabc RP |
1566 | |
1567 | if (wsource == NULL || wsink == NULL) | |
1568 | return -ENODEV; | |
1569 | ||
1570 | path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL); | |
1571 | if (!path) | |
1572 | return -ENOMEM; | |
1573 | ||
1574 | path->source = wsource; | |
1575 | path->sink = wsink; | |
215edda3 | 1576 | path->connected = route->connected; |
2b97eabc RP |
1577 | INIT_LIST_HEAD(&path->list); |
1578 | INIT_LIST_HEAD(&path->list_source); | |
1579 | INIT_LIST_HEAD(&path->list_sink); | |
1580 | ||
1581 | /* check for external widgets */ | |
1582 | if (wsink->id == snd_soc_dapm_input) { | |
1583 | if (wsource->id == snd_soc_dapm_micbias || | |
1584 | wsource->id == snd_soc_dapm_mic || | |
087d53ab RC |
1585 | wsource->id == snd_soc_dapm_line || |
1586 | wsource->id == snd_soc_dapm_output) | |
2b97eabc RP |
1587 | wsink->ext = 1; |
1588 | } | |
1589 | if (wsource->id == snd_soc_dapm_output) { | |
1590 | if (wsink->id == snd_soc_dapm_spk || | |
1591 | wsink->id == snd_soc_dapm_hp || | |
1e39221e SF |
1592 | wsink->id == snd_soc_dapm_line || |
1593 | wsink->id == snd_soc_dapm_input) | |
2b97eabc RP |
1594 | wsource->ext = 1; |
1595 | } | |
1596 | ||
1597 | /* connect static paths */ | |
1598 | if (control == NULL) { | |
8ddab3f5 | 1599 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1600 | list_add(&path->list_sink, &wsink->sources); |
1601 | list_add(&path->list_source, &wsource->sinks); | |
1602 | path->connect = 1; | |
1603 | return 0; | |
1604 | } | |
1605 | ||
1606 | /* connect dynamic paths */ | |
1607 | switch(wsink->id) { | |
1608 | case snd_soc_dapm_adc: | |
1609 | case snd_soc_dapm_dac: | |
1610 | case snd_soc_dapm_pga: | |
d88429a6 | 1611 | case snd_soc_dapm_out_drv: |
2b97eabc RP |
1612 | case snd_soc_dapm_input: |
1613 | case snd_soc_dapm_output: | |
1614 | case snd_soc_dapm_micbias: | |
1615 | case snd_soc_dapm_vmid: | |
1616 | case snd_soc_dapm_pre: | |
1617 | case snd_soc_dapm_post: | |
246d0a17 | 1618 | case snd_soc_dapm_supply: |
010ff262 MB |
1619 | case snd_soc_dapm_aif_in: |
1620 | case snd_soc_dapm_aif_out: | |
8ddab3f5 | 1621 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1622 | list_add(&path->list_sink, &wsink->sources); |
1623 | list_add(&path->list_source, &wsource->sinks); | |
1624 | path->connect = 1; | |
1625 | return 0; | |
1626 | case snd_soc_dapm_mux: | |
24ff33ac | 1627 | case snd_soc_dapm_virt_mux: |
74155556 | 1628 | case snd_soc_dapm_value_mux: |
ce6120cc | 1629 | ret = dapm_connect_mux(dapm, wsource, wsink, path, control, |
2b97eabc RP |
1630 | &wsink->kcontrols[0]); |
1631 | if (ret != 0) | |
1632 | goto err; | |
1633 | break; | |
1634 | case snd_soc_dapm_switch: | |
1635 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1636 | case snd_soc_dapm_mixer_named_ctl: |
ce6120cc | 1637 | ret = dapm_connect_mixer(dapm, wsource, wsink, path, control); |
2b97eabc RP |
1638 | if (ret != 0) |
1639 | goto err; | |
1640 | break; | |
1641 | case snd_soc_dapm_hp: | |
1642 | case snd_soc_dapm_mic: | |
1643 | case snd_soc_dapm_line: | |
1644 | case snd_soc_dapm_spk: | |
8ddab3f5 | 1645 | list_add(&path->list, &dapm->card->paths); |
2b97eabc RP |
1646 | list_add(&path->list_sink, &wsink->sources); |
1647 | list_add(&path->list_source, &wsource->sinks); | |
1648 | path->connect = 0; | |
1649 | return 0; | |
1650 | } | |
1651 | return 0; | |
1652 | ||
1653 | err: | |
f7d41ae8 JN |
1654 | dev_warn(dapm->dev, "asoc: no dapm match for %s --> %s --> %s\n", |
1655 | source, control, sink); | |
2b97eabc RP |
1656 | kfree(path); |
1657 | return ret; | |
1658 | } | |
105f1c28 | 1659 | |
105f1c28 MB |
1660 | /** |
1661 | * snd_soc_dapm_add_routes - Add routes between DAPM widgets | |
ce6120cc | 1662 | * @dapm: DAPM context |
105f1c28 MB |
1663 | * @route: audio routes |
1664 | * @num: number of routes | |
1665 | * | |
1666 | * Connects 2 dapm widgets together via a named audio path. The sink is | |
1667 | * the widget receiving the audio signal, whilst the source is the sender | |
1668 | * of the audio signal. | |
1669 | * | |
1670 | * Returns 0 for success else error. On error all resources can be freed | |
1671 | * with a call to snd_soc_card_free(). | |
1672 | */ | |
ce6120cc | 1673 | int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm, |
105f1c28 MB |
1674 | const struct snd_soc_dapm_route *route, int num) |
1675 | { | |
1676 | int i, ret; | |
1677 | ||
1678 | for (i = 0; i < num; i++) { | |
ce6120cc | 1679 | ret = snd_soc_dapm_add_route(dapm, route); |
105f1c28 | 1680 | if (ret < 0) { |
f7d41ae8 JN |
1681 | dev_err(dapm->dev, "Failed to add route %s->%s\n", |
1682 | route->source, route->sink); | |
105f1c28 MB |
1683 | return ret; |
1684 | } | |
1685 | route++; | |
1686 | } | |
1687 | ||
1688 | return 0; | |
1689 | } | |
1690 | EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes); | |
1691 | ||
2b97eabc RP |
1692 | /** |
1693 | * snd_soc_dapm_new_widgets - add new dapm widgets | |
ce6120cc | 1694 | * @dapm: DAPM context |
2b97eabc RP |
1695 | * |
1696 | * Checks the codec for any new dapm widgets and creates them if found. | |
1697 | * | |
1698 | * Returns 0 for success. | |
1699 | */ | |
ce6120cc | 1700 | int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm) |
2b97eabc RP |
1701 | { |
1702 | struct snd_soc_dapm_widget *w; | |
b66a70d5 | 1703 | unsigned int val; |
2b97eabc | 1704 | |
97c866de | 1705 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc RP |
1706 | { |
1707 | if (w->new) | |
1708 | continue; | |
1709 | ||
1710 | switch(w->id) { | |
1711 | case snd_soc_dapm_switch: | |
1712 | case snd_soc_dapm_mixer: | |
ca9c1aae | 1713 | case snd_soc_dapm_mixer_named_ctl: |
b75576d7 | 1714 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1715 | dapm_new_mixer(dapm, w); |
2b97eabc RP |
1716 | break; |
1717 | case snd_soc_dapm_mux: | |
24ff33ac | 1718 | case snd_soc_dapm_virt_mux: |
2e72f8e3 | 1719 | case snd_soc_dapm_value_mux: |
b75576d7 | 1720 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1721 | dapm_new_mux(dapm, w); |
2b97eabc RP |
1722 | break; |
1723 | case snd_soc_dapm_adc: | |
010ff262 | 1724 | case snd_soc_dapm_aif_out: |
b75576d7 MB |
1725 | w->power_check = dapm_adc_check_power; |
1726 | break; | |
2b97eabc | 1727 | case snd_soc_dapm_dac: |
010ff262 | 1728 | case snd_soc_dapm_aif_in: |
b75576d7 MB |
1729 | w->power_check = dapm_dac_check_power; |
1730 | break; | |
2b97eabc | 1731 | case snd_soc_dapm_pga: |
d88429a6 | 1732 | case snd_soc_dapm_out_drv: |
b75576d7 | 1733 | w->power_check = dapm_generic_check_power; |
ce6120cc | 1734 | dapm_new_pga(dapm, w); |
2b97eabc RP |
1735 | break; |
1736 | case snd_soc_dapm_input: | |
1737 | case snd_soc_dapm_output: | |
1738 | case snd_soc_dapm_micbias: | |
1739 | case snd_soc_dapm_spk: | |
1740 | case snd_soc_dapm_hp: | |
1741 | case snd_soc_dapm_mic: | |
1742 | case snd_soc_dapm_line: | |
b75576d7 MB |
1743 | w->power_check = dapm_generic_check_power; |
1744 | break; | |
246d0a17 MB |
1745 | case snd_soc_dapm_supply: |
1746 | w->power_check = dapm_supply_check_power; | |
2b97eabc RP |
1747 | case snd_soc_dapm_vmid: |
1748 | case snd_soc_dapm_pre: | |
1749 | case snd_soc_dapm_post: | |
1750 | break; | |
1751 | } | |
b66a70d5 MB |
1752 | |
1753 | /* Read the initial power state from the device */ | |
1754 | if (w->reg >= 0) { | |
1755 | val = snd_soc_read(w->codec, w->reg); | |
1756 | val &= 1 << w->shift; | |
1757 | if (w->invert) | |
1758 | val = !val; | |
1759 | ||
1760 | if (val) | |
1761 | w->power = 1; | |
1762 | } | |
1763 | ||
2b97eabc RP |
1764 | w->new = 1; |
1765 | } | |
1766 | ||
ce6120cc | 1767 | dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP); |
2b97eabc RP |
1768 | return 0; |
1769 | } | |
1770 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets); | |
1771 | ||
1772 | /** | |
1773 | * snd_soc_dapm_get_volsw - dapm mixer get callback | |
1774 | * @kcontrol: mixer control | |
ac11a2b3 | 1775 | * @ucontrol: control element information |
2b97eabc RP |
1776 | * |
1777 | * Callback to get the value of a dapm mixer control. | |
1778 | * | |
1779 | * Returns 0 for success. | |
1780 | */ | |
1781 | int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol, | |
1782 | struct snd_ctl_elem_value *ucontrol) | |
1783 | { | |
1784 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1785 | struct soc_mixer_control *mc = |
1786 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1787 | unsigned int reg = mc->reg; |
1788 | unsigned int shift = mc->shift; | |
1789 | unsigned int rshift = mc->rshift; | |
4eaa9819 | 1790 | int max = mc->max; |
815ecf8d JS |
1791 | unsigned int invert = mc->invert; |
1792 | unsigned int mask = (1 << fls(max)) - 1; | |
2b97eabc | 1793 | |
2b97eabc RP |
1794 | ucontrol->value.integer.value[0] = |
1795 | (snd_soc_read(widget->codec, reg) >> shift) & mask; | |
1796 | if (shift != rshift) | |
1797 | ucontrol->value.integer.value[1] = | |
1798 | (snd_soc_read(widget->codec, reg) >> rshift) & mask; | |
1799 | if (invert) { | |
1800 | ucontrol->value.integer.value[0] = | |
a7a4ac86 | 1801 | max - ucontrol->value.integer.value[0]; |
2b97eabc RP |
1802 | if (shift != rshift) |
1803 | ucontrol->value.integer.value[1] = | |
a7a4ac86 | 1804 | max - ucontrol->value.integer.value[1]; |
2b97eabc RP |
1805 | } |
1806 | ||
1807 | return 0; | |
1808 | } | |
1809 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw); | |
1810 | ||
1811 | /** | |
1812 | * snd_soc_dapm_put_volsw - dapm mixer set callback | |
1813 | * @kcontrol: mixer control | |
ac11a2b3 | 1814 | * @ucontrol: control element information |
2b97eabc RP |
1815 | * |
1816 | * Callback to set the value of a dapm mixer control. | |
1817 | * | |
1818 | * Returns 0 for success. | |
1819 | */ | |
1820 | int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol, | |
1821 | struct snd_ctl_elem_value *ucontrol) | |
1822 | { | |
1823 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
4eaa9819 JS |
1824 | struct soc_mixer_control *mc = |
1825 | (struct soc_mixer_control *)kcontrol->private_value; | |
815ecf8d JS |
1826 | unsigned int reg = mc->reg; |
1827 | unsigned int shift = mc->shift; | |
4eaa9819 | 1828 | int max = mc->max; |
815ecf8d JS |
1829 | unsigned int mask = (1 << fls(max)) - 1; |
1830 | unsigned int invert = mc->invert; | |
e9cf7049 | 1831 | unsigned int val; |
97404f2e MB |
1832 | int connect, change; |
1833 | struct snd_soc_dapm_update update; | |
2b97eabc RP |
1834 | |
1835 | val = (ucontrol->value.integer.value[0] & mask); | |
1836 | ||
1837 | if (invert) | |
a7a4ac86 | 1838 | val = max - val; |
e9cf7049 | 1839 | mask = mask << shift; |
2b97eabc | 1840 | val = val << shift; |
2b97eabc RP |
1841 | |
1842 | mutex_lock(&widget->codec->mutex); | |
1843 | widget->value = val; | |
1844 | ||
e9cf7049 | 1845 | change = snd_soc_test_bits(widget->codec, reg, mask, val); |
97404f2e | 1846 | if (change) { |
283375ce MB |
1847 | if (val) |
1848 | /* new connection */ | |
1849 | connect = invert ? 0:1; | |
1850 | else | |
1851 | /* old connection must be powered down */ | |
1852 | connect = invert ? 1:0; | |
1853 | ||
97404f2e MB |
1854 | update.kcontrol = kcontrol; |
1855 | update.widget = widget; | |
1856 | update.reg = reg; | |
1857 | update.mask = mask; | |
1858 | update.val = val; | |
1859 | widget->dapm->update = &update; | |
1860 | ||
283375ce | 1861 | dapm_mixer_update_power(widget, kcontrol, connect); |
97404f2e MB |
1862 | |
1863 | widget->dapm->update = NULL; | |
283375ce MB |
1864 | } |
1865 | ||
2b97eabc | 1866 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1867 | return 0; |
2b97eabc RP |
1868 | } |
1869 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw); | |
1870 | ||
1871 | /** | |
1872 | * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback | |
1873 | * @kcontrol: mixer control | |
ac11a2b3 | 1874 | * @ucontrol: control element information |
2b97eabc RP |
1875 | * |
1876 | * Callback to get the value of a dapm enumerated double mixer control. | |
1877 | * | |
1878 | * Returns 0 for success. | |
1879 | */ | |
1880 | int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol, | |
1881 | struct snd_ctl_elem_value *ucontrol) | |
1882 | { | |
1883 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1884 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
46f5822f | 1885 | unsigned int val, bitmask; |
2b97eabc | 1886 | |
f8ba0b7b | 1887 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc RP |
1888 | ; |
1889 | val = snd_soc_read(widget->codec, e->reg); | |
1890 | ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1); | |
1891 | if (e->shift_l != e->shift_r) | |
1892 | ucontrol->value.enumerated.item[1] = | |
1893 | (val >> e->shift_r) & (bitmask - 1); | |
1894 | ||
1895 | return 0; | |
1896 | } | |
1897 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double); | |
1898 | ||
1899 | /** | |
1900 | * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback | |
1901 | * @kcontrol: mixer control | |
ac11a2b3 | 1902 | * @ucontrol: control element information |
2b97eabc RP |
1903 | * |
1904 | * Callback to set the value of a dapm enumerated double mixer control. | |
1905 | * | |
1906 | * Returns 0 for success. | |
1907 | */ | |
1908 | int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol, | |
1909 | struct snd_ctl_elem_value *ucontrol) | |
1910 | { | |
1911 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1912 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; | |
3a65577d | 1913 | unsigned int val, mux, change; |
46f5822f | 1914 | unsigned int mask, bitmask; |
97404f2e | 1915 | struct snd_soc_dapm_update update; |
2b97eabc | 1916 | |
f8ba0b7b | 1917 | for (bitmask = 1; bitmask < e->max; bitmask <<= 1) |
2b97eabc | 1918 | ; |
f8ba0b7b | 1919 | if (ucontrol->value.enumerated.item[0] > e->max - 1) |
2b97eabc RP |
1920 | return -EINVAL; |
1921 | mux = ucontrol->value.enumerated.item[0]; | |
1922 | val = mux << e->shift_l; | |
1923 | mask = (bitmask - 1) << e->shift_l; | |
1924 | if (e->shift_l != e->shift_r) { | |
f8ba0b7b | 1925 | if (ucontrol->value.enumerated.item[1] > e->max - 1) |
2b97eabc RP |
1926 | return -EINVAL; |
1927 | val |= ucontrol->value.enumerated.item[1] << e->shift_r; | |
1928 | mask |= (bitmask - 1) << e->shift_r; | |
1929 | } | |
1930 | ||
1931 | mutex_lock(&widget->codec->mutex); | |
1932 | widget->value = val; | |
3a65577d | 1933 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 1934 | |
97404f2e MB |
1935 | update.kcontrol = kcontrol; |
1936 | update.widget = widget; | |
1937 | update.reg = e->reg; | |
1938 | update.mask = mask; | |
1939 | update.val = val; | |
1940 | widget->dapm->update = &update; | |
1642e3d4 | 1941 | |
97404f2e | 1942 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 1943 | |
97404f2e | 1944 | widget->dapm->update = NULL; |
2b97eabc | 1945 | |
2b97eabc | 1946 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 1947 | return change; |
2b97eabc RP |
1948 | } |
1949 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double); | |
1950 | ||
d2b247a8 MB |
1951 | /** |
1952 | * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux | |
1953 | * @kcontrol: mixer control | |
1954 | * @ucontrol: control element information | |
1955 | * | |
1956 | * Returns 0 for success. | |
1957 | */ | |
1958 | int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol, | |
1959 | struct snd_ctl_elem_value *ucontrol) | |
1960 | { | |
1961 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1962 | ||
1963 | ucontrol->value.enumerated.item[0] = widget->value; | |
1964 | ||
1965 | return 0; | |
1966 | } | |
1967 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt); | |
1968 | ||
1969 | /** | |
1970 | * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux | |
1971 | * @kcontrol: mixer control | |
1972 | * @ucontrol: control element information | |
1973 | * | |
1974 | * Returns 0 for success. | |
1975 | */ | |
1976 | int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol, | |
1977 | struct snd_ctl_elem_value *ucontrol) | |
1978 | { | |
1979 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
1980 | struct soc_enum *e = | |
1981 | (struct soc_enum *)kcontrol->private_value; | |
1982 | int change; | |
1983 | int ret = 0; | |
1984 | ||
1985 | if (ucontrol->value.enumerated.item[0] >= e->max) | |
1986 | return -EINVAL; | |
1987 | ||
1988 | mutex_lock(&widget->codec->mutex); | |
1989 | ||
1990 | change = widget->value != ucontrol->value.enumerated.item[0]; | |
1991 | widget->value = ucontrol->value.enumerated.item[0]; | |
1992 | dapm_mux_update_power(widget, kcontrol, change, widget->value, e); | |
1993 | ||
1994 | mutex_unlock(&widget->codec->mutex); | |
1995 | return ret; | |
1996 | } | |
1997 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt); | |
1998 | ||
2e72f8e3 PU |
1999 | /** |
2000 | * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get | |
2001 | * callback | |
2002 | * @kcontrol: mixer control | |
2003 | * @ucontrol: control element information | |
2004 | * | |
2005 | * Callback to get the value of a dapm semi enumerated double mixer control. | |
2006 | * | |
2007 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2008 | * used for handling bitfield coded enumeration for example. | |
2009 | * | |
2010 | * Returns 0 for success. | |
2011 | */ | |
2012 | int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol, | |
2013 | struct snd_ctl_elem_value *ucontrol) | |
2014 | { | |
2015 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 2016 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
46f5822f | 2017 | unsigned int reg_val, val, mux; |
2e72f8e3 PU |
2018 | |
2019 | reg_val = snd_soc_read(widget->codec, e->reg); | |
2020 | val = (reg_val >> e->shift_l) & e->mask; | |
2021 | for (mux = 0; mux < e->max; mux++) { | |
2022 | if (val == e->values[mux]) | |
2023 | break; | |
2024 | } | |
2025 | ucontrol->value.enumerated.item[0] = mux; | |
2026 | if (e->shift_l != e->shift_r) { | |
2027 | val = (reg_val >> e->shift_r) & e->mask; | |
2028 | for (mux = 0; mux < e->max; mux++) { | |
2029 | if (val == e->values[mux]) | |
2030 | break; | |
2031 | } | |
2032 | ucontrol->value.enumerated.item[1] = mux; | |
2033 | } | |
2034 | ||
2035 | return 0; | |
2036 | } | |
2037 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double); | |
2038 | ||
2039 | /** | |
2040 | * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set | |
2041 | * callback | |
2042 | * @kcontrol: mixer control | |
2043 | * @ucontrol: control element information | |
2044 | * | |
2045 | * Callback to set the value of a dapm semi enumerated double mixer control. | |
2046 | * | |
2047 | * Semi enumerated mixer: the enumerated items are referred as values. Can be | |
2048 | * used for handling bitfield coded enumeration for example. | |
2049 | * | |
2050 | * Returns 0 for success. | |
2051 | */ | |
2052 | int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol, | |
2053 | struct snd_ctl_elem_value *ucontrol) | |
2054 | { | |
2055 | struct snd_soc_dapm_widget *widget = snd_kcontrol_chip(kcontrol); | |
74155556 | 2056 | struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; |
3a65577d | 2057 | unsigned int val, mux, change; |
46f5822f | 2058 | unsigned int mask; |
97404f2e | 2059 | struct snd_soc_dapm_update update; |
2e72f8e3 PU |
2060 | |
2061 | if (ucontrol->value.enumerated.item[0] > e->max - 1) | |
2062 | return -EINVAL; | |
2063 | mux = ucontrol->value.enumerated.item[0]; | |
2064 | val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l; | |
2065 | mask = e->mask << e->shift_l; | |
2066 | if (e->shift_l != e->shift_r) { | |
2067 | if (ucontrol->value.enumerated.item[1] > e->max - 1) | |
2068 | return -EINVAL; | |
2069 | val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r; | |
2070 | mask |= e->mask << e->shift_r; | |
2071 | } | |
2072 | ||
2073 | mutex_lock(&widget->codec->mutex); | |
2074 | widget->value = val; | |
3a65577d | 2075 | change = snd_soc_test_bits(widget->codec, e->reg, mask, val); |
1642e3d4 | 2076 | |
97404f2e MB |
2077 | update.kcontrol = kcontrol; |
2078 | update.widget = widget; | |
2079 | update.reg = e->reg; | |
2080 | update.mask = mask; | |
2081 | update.val = val; | |
2082 | widget->dapm->update = &update; | |
1642e3d4 | 2083 | |
97404f2e | 2084 | dapm_mux_update_power(widget, kcontrol, change, mux, e); |
1642e3d4 | 2085 | |
97404f2e | 2086 | widget->dapm->update = NULL; |
2e72f8e3 | 2087 | |
2e72f8e3 | 2088 | mutex_unlock(&widget->codec->mutex); |
97404f2e | 2089 | return change; |
2e72f8e3 PU |
2090 | } |
2091 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double); | |
2092 | ||
8b37dbd2 MB |
2093 | /** |
2094 | * snd_soc_dapm_info_pin_switch - Info for a pin switch | |
2095 | * | |
2096 | * @kcontrol: mixer control | |
2097 | * @uinfo: control element information | |
2098 | * | |
2099 | * Callback to provide information about a pin switch control. | |
2100 | */ | |
2101 | int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol, | |
2102 | struct snd_ctl_elem_info *uinfo) | |
2103 | { | |
2104 | uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; | |
2105 | uinfo->count = 1; | |
2106 | uinfo->value.integer.min = 0; | |
2107 | uinfo->value.integer.max = 1; | |
2108 | ||
2109 | return 0; | |
2110 | } | |
2111 | EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch); | |
2112 | ||
2113 | /** | |
2114 | * snd_soc_dapm_get_pin_switch - Get information for a pin switch | |
2115 | * | |
2116 | * @kcontrol: mixer control | |
2117 | * @ucontrol: Value | |
2118 | */ | |
2119 | int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol, | |
2120 | struct snd_ctl_elem_value *ucontrol) | |
2121 | { | |
2122 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2123 | const char *pin = (const char *)kcontrol->private_value; | |
2124 | ||
2125 | mutex_lock(&codec->mutex); | |
2126 | ||
2127 | ucontrol->value.integer.value[0] = | |
ce6120cc | 2128 | snd_soc_dapm_get_pin_status(&codec->dapm, pin); |
8b37dbd2 MB |
2129 | |
2130 | mutex_unlock(&codec->mutex); | |
2131 | ||
2132 | return 0; | |
2133 | } | |
2134 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch); | |
2135 | ||
2136 | /** | |
2137 | * snd_soc_dapm_put_pin_switch - Set information for a pin switch | |
2138 | * | |
2139 | * @kcontrol: mixer control | |
2140 | * @ucontrol: Value | |
2141 | */ | |
2142 | int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol, | |
2143 | struct snd_ctl_elem_value *ucontrol) | |
2144 | { | |
2145 | struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); | |
2146 | const char *pin = (const char *)kcontrol->private_value; | |
2147 | ||
2148 | mutex_lock(&codec->mutex); | |
2149 | ||
2150 | if (ucontrol->value.integer.value[0]) | |
ce6120cc | 2151 | snd_soc_dapm_enable_pin(&codec->dapm, pin); |
8b37dbd2 | 2152 | else |
ce6120cc | 2153 | snd_soc_dapm_disable_pin(&codec->dapm, pin); |
8b37dbd2 | 2154 | |
ce6120cc | 2155 | snd_soc_dapm_sync(&codec->dapm); |
8b37dbd2 MB |
2156 | |
2157 | mutex_unlock(&codec->mutex); | |
2158 | ||
2159 | return 0; | |
2160 | } | |
2161 | EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch); | |
2162 | ||
2b97eabc RP |
2163 | /** |
2164 | * snd_soc_dapm_new_control - create new dapm control | |
ce6120cc | 2165 | * @dapm: DAPM context |
2b97eabc RP |
2166 | * @widget: widget template |
2167 | * | |
2168 | * Creates a new dapm control based upon the template. | |
2169 | * | |
2170 | * Returns 0 for success else error. | |
2171 | */ | |
ce6120cc | 2172 | int snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm, |
2b97eabc RP |
2173 | const struct snd_soc_dapm_widget *widget) |
2174 | { | |
2175 | struct snd_soc_dapm_widget *w; | |
ead9b919 | 2176 | size_t name_len; |
2b97eabc RP |
2177 | |
2178 | if ((w = dapm_cnew_widget(widget)) == NULL) | |
2179 | return -ENOMEM; | |
2180 | ||
ead9b919 | 2181 | name_len = strlen(widget->name) + 1; |
88e8b9a8 | 2182 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2183 | name_len += 1 + strlen(dapm->codec->name_prefix); |
2184 | w->name = kmalloc(name_len, GFP_KERNEL); | |
2185 | if (w->name == NULL) { | |
2186 | kfree(w); | |
2187 | return -ENOMEM; | |
2188 | } | |
88e8b9a8 | 2189 | if (dapm->codec && dapm->codec->name_prefix) |
ead9b919 JN |
2190 | snprintf(w->name, name_len, "%s %s", |
2191 | dapm->codec->name_prefix, widget->name); | |
2192 | else | |
2193 | snprintf(w->name, name_len, "%s", widget->name); | |
2194 | ||
97c866de | 2195 | dapm->n_widgets++; |
ce6120cc LG |
2196 | w->dapm = dapm; |
2197 | w->codec = dapm->codec; | |
2b97eabc RP |
2198 | INIT_LIST_HEAD(&w->sources); |
2199 | INIT_LIST_HEAD(&w->sinks); | |
2200 | INIT_LIST_HEAD(&w->list); | |
97c866de | 2201 | list_add(&w->list, &dapm->card->widgets); |
2b97eabc RP |
2202 | |
2203 | /* machine layer set ups unconnected pins and insertions */ | |
2204 | w->connected = 1; | |
2205 | return 0; | |
2206 | } | |
2207 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control); | |
2208 | ||
4ba1327a MB |
2209 | /** |
2210 | * snd_soc_dapm_new_controls - create new dapm controls | |
ce6120cc | 2211 | * @dapm: DAPM context |
4ba1327a MB |
2212 | * @widget: widget array |
2213 | * @num: number of widgets | |
2214 | * | |
2215 | * Creates new DAPM controls based upon the templates. | |
2216 | * | |
2217 | * Returns 0 for success else error. | |
2218 | */ | |
ce6120cc | 2219 | int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm, |
4ba1327a MB |
2220 | const struct snd_soc_dapm_widget *widget, |
2221 | int num) | |
2222 | { | |
2223 | int i, ret; | |
2224 | ||
2225 | for (i = 0; i < num; i++) { | |
ce6120cc | 2226 | ret = snd_soc_dapm_new_control(dapm, widget); |
b8b33cb5 | 2227 | if (ret < 0) { |
f7d41ae8 JN |
2228 | dev_err(dapm->dev, |
2229 | "ASoC: Failed to create DAPM control %s: %d\n", | |
2230 | widget->name, ret); | |
4ba1327a | 2231 | return ret; |
b8b33cb5 | 2232 | } |
4ba1327a MB |
2233 | widget++; |
2234 | } | |
2235 | return 0; | |
2236 | } | |
2237 | EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls); | |
2238 | ||
ce6120cc | 2239 | static void soc_dapm_stream_event(struct snd_soc_dapm_context *dapm, |
f0fba2ad | 2240 | const char *stream, int event) |
2b97eabc RP |
2241 | { |
2242 | struct snd_soc_dapm_widget *w; | |
2243 | ||
97c866de | 2244 | list_for_each_entry(w, &dapm->card->widgets, list) |
2b97eabc | 2245 | { |
97c866de | 2246 | if (!w->sname || w->dapm != dapm) |
2b97eabc | 2247 | continue; |
f7d41ae8 JN |
2248 | dev_dbg(w->dapm->dev, "widget %s\n %s stream %s event %d\n", |
2249 | w->name, w->sname, stream, event); | |
2b97eabc RP |
2250 | if (strstr(w->sname, stream)) { |
2251 | switch(event) { | |
2252 | case SND_SOC_DAPM_STREAM_START: | |
2253 | w->active = 1; | |
2254 | break; | |
2255 | case SND_SOC_DAPM_STREAM_STOP: | |
2256 | w->active = 0; | |
2257 | break; | |
2258 | case SND_SOC_DAPM_STREAM_SUSPEND: | |
2b97eabc | 2259 | case SND_SOC_DAPM_STREAM_RESUME: |
2b97eabc | 2260 | case SND_SOC_DAPM_STREAM_PAUSE_PUSH: |
2b97eabc RP |
2261 | case SND_SOC_DAPM_STREAM_PAUSE_RELEASE: |
2262 | break; | |
2263 | } | |
2264 | } | |
2265 | } | |
2b97eabc | 2266 | |
ce6120cc LG |
2267 | dapm_power_widgets(dapm, event); |
2268 | } | |
2269 | ||
2270 | /** | |
2271 | * snd_soc_dapm_stream_event - send a stream event to the dapm core | |
2272 | * @rtd: PCM runtime data | |
2273 | * @stream: stream name | |
2274 | * @event: stream event | |
2275 | * | |
2276 | * Sends a stream event to the dapm core. The core then makes any | |
2277 | * necessary widget power changes. | |
2278 | * | |
2279 | * Returns 0 for success else error. | |
2280 | */ | |
2281 | int snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, | |
2282 | const char *stream, int event) | |
2283 | { | |
2284 | struct snd_soc_codec *codec = rtd->codec; | |
2285 | ||
2286 | if (stream == NULL) | |
2287 | return 0; | |
2288 | ||
2289 | mutex_lock(&codec->mutex); | |
2290 | soc_dapm_stream_event(&codec->dapm, stream, event); | |
8e8b2d67 | 2291 | mutex_unlock(&codec->mutex); |
2b97eabc RP |
2292 | return 0; |
2293 | } | |
2b97eabc RP |
2294 | |
2295 | /** | |
a5302181 | 2296 | * snd_soc_dapm_enable_pin - enable pin. |
ce6120cc | 2297 | * @dapm: DAPM context |
a5302181 | 2298 | * @pin: pin name |
2b97eabc | 2299 | * |
74b8f955 | 2300 | * Enables input/output pin and its parents or children widgets iff there is |
a5302181 LG |
2301 | * a valid audio route and active audio stream. |
2302 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2303 | * do any widget power switching. | |
2b97eabc | 2304 | */ |
ce6120cc | 2305 | int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
2b97eabc | 2306 | { |
ce6120cc | 2307 | return snd_soc_dapm_set_pin(dapm, pin, 1); |
a5302181 LG |
2308 | } |
2309 | EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin); | |
2b97eabc | 2310 | |
da34183e MB |
2311 | /** |
2312 | * snd_soc_dapm_force_enable_pin - force a pin to be enabled | |
ce6120cc | 2313 | * @dapm: DAPM context |
da34183e MB |
2314 | * @pin: pin name |
2315 | * | |
2316 | * Enables input/output pin regardless of any other state. This is | |
2317 | * intended for use with microphone bias supplies used in microphone | |
2318 | * jack detection. | |
2319 | * | |
2320 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2321 | * do any widget power switching. | |
2322 | */ | |
ce6120cc LG |
2323 | int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm, |
2324 | const char *pin) | |
da34183e MB |
2325 | { |
2326 | struct snd_soc_dapm_widget *w; | |
2327 | ||
97c866de JN |
2328 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2329 | if (w->dapm != dapm) | |
2330 | continue; | |
da34183e | 2331 | if (!strcmp(w->name, pin)) { |
f7d41ae8 JN |
2332 | dev_dbg(w->dapm->dev, |
2333 | "dapm: force enable pin %s\n", pin); | |
da34183e MB |
2334 | w->connected = 1; |
2335 | w->force = 1; | |
2336 | return 0; | |
2337 | } | |
2338 | } | |
2339 | ||
f7d41ae8 | 2340 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
da34183e MB |
2341 | return -EINVAL; |
2342 | } | |
2343 | EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin); | |
2344 | ||
a5302181 LG |
2345 | /** |
2346 | * snd_soc_dapm_disable_pin - disable pin. | |
ce6120cc | 2347 | * @dapm: DAPM context |
a5302181 LG |
2348 | * @pin: pin name |
2349 | * | |
74b8f955 | 2350 | * Disables input/output pin and its parents or children widgets. |
a5302181 LG |
2351 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to |
2352 | * do any widget power switching. | |
2353 | */ | |
ce6120cc LG |
2354 | int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm, |
2355 | const char *pin) | |
a5302181 | 2356 | { |
ce6120cc | 2357 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
2b97eabc | 2358 | } |
a5302181 | 2359 | EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin); |
2b97eabc | 2360 | |
5817b52a MB |
2361 | /** |
2362 | * snd_soc_dapm_nc_pin - permanently disable pin. | |
ce6120cc | 2363 | * @dapm: DAPM context |
5817b52a MB |
2364 | * @pin: pin name |
2365 | * | |
2366 | * Marks the specified pin as being not connected, disabling it along | |
2367 | * any parent or child widgets. At present this is identical to | |
2368 | * snd_soc_dapm_disable_pin() but in future it will be extended to do | |
2369 | * additional things such as disabling controls which only affect | |
2370 | * paths through the pin. | |
2371 | * | |
2372 | * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to | |
2373 | * do any widget power switching. | |
2374 | */ | |
ce6120cc | 2375 | int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin) |
5817b52a | 2376 | { |
ce6120cc | 2377 | return snd_soc_dapm_set_pin(dapm, pin, 0); |
5817b52a MB |
2378 | } |
2379 | EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin); | |
2380 | ||
eeec12bf | 2381 | /** |
a5302181 | 2382 | * snd_soc_dapm_get_pin_status - get audio pin status |
ce6120cc | 2383 | * @dapm: DAPM context |
a5302181 | 2384 | * @pin: audio signal pin endpoint (or start point) |
eeec12bf | 2385 | * |
a5302181 | 2386 | * Get audio pin status - connected or disconnected. |
eeec12bf | 2387 | * |
a5302181 | 2388 | * Returns 1 for connected otherwise 0. |
eeec12bf | 2389 | */ |
ce6120cc LG |
2390 | int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm, |
2391 | const char *pin) | |
eeec12bf GG |
2392 | { |
2393 | struct snd_soc_dapm_widget *w; | |
2394 | ||
97c866de JN |
2395 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2396 | if (w->dapm != dapm) | |
2397 | continue; | |
a5302181 | 2398 | if (!strcmp(w->name, pin)) |
eeec12bf GG |
2399 | return w->connected; |
2400 | } | |
2401 | ||
2402 | return 0; | |
2403 | } | |
a5302181 | 2404 | EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status); |
eeec12bf | 2405 | |
1547aba9 MB |
2406 | /** |
2407 | * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint | |
ce6120cc | 2408 | * @dapm: DAPM context |
1547aba9 MB |
2409 | * @pin: audio signal pin endpoint (or start point) |
2410 | * | |
2411 | * Mark the given endpoint or pin as ignoring suspend. When the | |
2412 | * system is disabled a path between two endpoints flagged as ignoring | |
2413 | * suspend will not be disabled. The path must already be enabled via | |
2414 | * normal means at suspend time, it will not be turned on if it was not | |
2415 | * already enabled. | |
2416 | */ | |
ce6120cc LG |
2417 | int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm, |
2418 | const char *pin) | |
1547aba9 MB |
2419 | { |
2420 | struct snd_soc_dapm_widget *w; | |
2421 | ||
97c866de JN |
2422 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2423 | if (w->dapm != dapm) | |
2424 | continue; | |
1547aba9 MB |
2425 | if (!strcmp(w->name, pin)) { |
2426 | w->ignore_suspend = 1; | |
2427 | return 0; | |
2428 | } | |
2429 | } | |
2430 | ||
f7d41ae8 | 2431 | dev_err(dapm->dev, "dapm: unknown pin %s\n", pin); |
1547aba9 MB |
2432 | return -EINVAL; |
2433 | } | |
2434 | EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend); | |
2435 | ||
2b97eabc RP |
2436 | /** |
2437 | * snd_soc_dapm_free - free dapm resources | |
f0fba2ad | 2438 | * @card: SoC device |
2b97eabc RP |
2439 | * |
2440 | * Free all dapm widgets and resources. | |
2441 | */ | |
ce6120cc | 2442 | void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm) |
2b97eabc | 2443 | { |
ce6120cc LG |
2444 | snd_soc_dapm_sys_remove(dapm->dev); |
2445 | dapm_free_widgets(dapm); | |
7be31be8 | 2446 | list_del(&dapm->list); |
2b97eabc RP |
2447 | } |
2448 | EXPORT_SYMBOL_GPL(snd_soc_dapm_free); | |
2449 | ||
ce6120cc | 2450 | static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm) |
51737470 | 2451 | { |
51737470 MB |
2452 | struct snd_soc_dapm_widget *w; |
2453 | LIST_HEAD(down_list); | |
2454 | int powerdown = 0; | |
2455 | ||
97c866de JN |
2456 | list_for_each_entry(w, &dapm->card->widgets, list) { |
2457 | if (w->dapm != dapm) | |
2458 | continue; | |
51737470 | 2459 | if (w->power) { |
828a842f | 2460 | dapm_seq_insert(w, &down_list, false); |
c2caa4da | 2461 | w->power = 0; |
51737470 MB |
2462 | powerdown = 1; |
2463 | } | |
2464 | } | |
2465 | ||
2466 | /* If there were no widgets to power down we're already in | |
2467 | * standby. | |
2468 | */ | |
2469 | if (powerdown) { | |
ed5a4c47 | 2470 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_PREPARE); |
828a842f | 2471 | dapm_seq_run(dapm, &down_list, 0, false); |
ed5a4c47 | 2472 | snd_soc_dapm_set_bias_level(dapm, SND_SOC_BIAS_STANDBY); |
51737470 | 2473 | } |
f0fba2ad LG |
2474 | } |
2475 | ||
2476 | /* | |
2477 | * snd_soc_dapm_shutdown - callback for system shutdown | |
2478 | */ | |
2479 | void snd_soc_dapm_shutdown(struct snd_soc_card *card) | |
2480 | { | |
2481 | struct snd_soc_codec *codec; | |
2482 | ||
ce6120cc LG |
2483 | list_for_each_entry(codec, &card->codec_dev_list, list) { |
2484 | soc_dapm_shutdown_codec(&codec->dapm); | |
ed5a4c47 | 2485 | snd_soc_dapm_set_bias_level(&codec->dapm, SND_SOC_BIAS_OFF); |
ce6120cc | 2486 | } |
51737470 MB |
2487 | } |
2488 | ||
2b97eabc | 2489 | /* Module information */ |
d331124d | 2490 | MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk"); |
2b97eabc RP |
2491 | MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC"); |
2492 | MODULE_LICENSE("GPL"); |